KR20040094216A - A remote self-test device for computer and methode thereof - Google Patents

Abstract

PURPOSE: A device and a method for a remote self-diagnosis of a computer are provided to check/transmit an abnormality of the computer to the main computer by installing in the computer and connecting to the main computer through the network, and correctly check an error part by forcibly starting a system through an embedded OS(Operating System) even if the computer is not booted. CONSTITUTION: An I/O(Input/Output) device connecting/processing part(11) processes a signal by connecting to a monitor, a keyboard, and a mouse. A PCI(Peripheral Component Interconnect) controller(13) checks an error code by connecting to a CPU(12) and scanning an internal PCI bus(20). A WAN(Wide Area Network) port(14) is connected to the CPU and the main computer. A LAN(Local Area Network) port(15) is connected to the PCs and includes an IP(Internet Protocol) sharing function. An IP sharing/LAN function controller(16) performs/controls an IP sharing function and a LAN card function by connecting to the CPU and the LAN port. A communication controller(17) interposes between the IP sharing/LAN function controller and the PCI bus. A boot ROM(19) stores a booting BIOS(Basic Input/Output System) file and image.

Description

A REMOTE SELF-TEST DEVICE FOR COMPUTER AND METHODE THEREOF}

The present invention is mounted in the computer to be managed and connected to the main computer (server) through a network to check the abnormality of the computer to be managed according to the remote control signal of the main computer and transmits information about it to the main computer, in particular The present invention relates to a remote self-diagnosis apparatus and a method for enabling a computer to accurately check an error area after forcibly starting a system through its own operating system even when a managed computer is not booted.

A common computer management was for an administrator to check the system for errors and to repair the checked error areas.

Such management has a problem of inefficient efficiency due to time and expense.

Therefore, to improve this, a system for remotely managing a computer to be managed has emerged. However, such a remote management system could check some of the error of the managed computer at a remote location, but the failure of the computer system itself could not be checked in case of an error in which the computer did not boot at all, and the administrator failed to boot. I had to check the faults of the old system directly. In terms of management service, it is inefficient for the management service such as the administrator visits the system that failed to boot first and checks the error directly, and the second visit when replacing parts to correct the error of the checked part. There was a problem.

The present invention has been made under the above-mentioned background, and an object of the present invention is to be installed in a computer to be managed and connected to a main computer (server) through a network to check whether there is an abnormality of the computer to be managed according to a remote control signal of the main computer. This information is transmitted to the main computer. Especially, even when the computer to be managed is not booted, the system is forced to start up through its own operating system so that the error part of the system can be checked accurately. A remote self-diagnosis apparatus and method for a computer are provided.

Another object of the present invention is to enable the user to restore the system at the first visit by allowing the administrator to check the exact error even in the event of a system failure in which the managed computer fails to boot, thereby greatly improving the efficiency of the management service. It is to provide a remote self-diagnosis apparatus and method.

1 is a block diagram of the entire management system to which the remote self-diagnosis apparatus and method of a computer according to the present invention is applied;

2 is an internal circuit block diagram of a remote self-diagnosis apparatus of a computer of the present invention;

3A and 3B are operational flowcharts showing a remote self-diagnosis method of the computer of the present invention.

<Description of the symbols for the main parts of the drawings>

100: main computer 200: DB (database)

101,102, ...: PC 10: Self diagnosis device

11: input / output device connection and processing unit 12: CPU

13: PCI controller 14: WAN port

15: LAN Port 16: IP Sharing and LAN Function Control Unit

17: communication control unit 18a: DRAM

18b: flash memory 19: bootrom

The present invention for achieving the above object is to totally manage at least one or more managed PCs through a predetermined management program, backup the data of the PC, or distribute the predetermined application software to the PC, the management target PC It is connected to the main server (or computer) to remotely control the self-diagnosis card installed in the self-diagnostic management PC and to remotely process (recover) it in case of boot failure or hardware and software failure of the management PC. At least one management DB for storing the backup data of the management target PC, predetermined application software, etc., and connected to the main server via a network, equipped with a self-diagnostic device therein, and provided with management of the system under the control of the main server. In the PC remote management system including the target PC, the self-diagnosis device is a PC monitor, keyboard, An input / output device connection and processing unit connected to a mouse and processing a signal; A central processing unit (CPU) connected to the input / output device connection and processing unit and equipped with an operating system (OS) to use an independent operating system and to centrally control peripheral devices; A PCI controller connected to the CPU and checking an error code by scanning an internal PCI BUS of the PC; A WAN port unit connected to the CPU and connected to the main server; A LAN port unit including an IP sharing function and connected to management PCs; An IP sharing and LAN function control unit connected to the CPU and LAN port to control and perform an IP sharer function and a LAN card function; A communication control unit resumed between the IP sharing and LAN function control unit and the PCI BUS of the PC; DRAM and flash memory coupled to the CPU; A boot ROM interposed between the PCI controller and the communication controller to store a booting BIOS file and an image; Has the features included.

In addition, the self-diagnosis method of the present invention includes initializing the CPU and memory of the system when power is applied (S1), reading the BIOS program stored in the ROM after CPU initialization (S2), and input / output (I). / O) step of transmitting to the device check process memory (S3), and checking the peripheral device such as memory, VGA (S4), and checking the input / output (I / O) device and transmitting a command code (S5) And determining whether an acknowledgment code is received according to the inspection of the input / output (I / O) device (S6), and if the acknowledgment code is not received in the determination step (S6), returns to step S5 and the response code is In step S7, if it is determined that the inspection of the input / output (I / O) device is finished, and if the inspection of the input / output (I / O) device is not finished in the determination step (S7), the next peripheral device is examined. Returning to the step S4 (S8) and the input / output (I / O) device in the determination step (S7) When the test is completed, copying the boot loader address to the memory (S9), executing the boot (Boot) file copied to the memory (S10), and granting permission to the operating system (OS) booting (Booting) In the management target PC equipped with a self-diagnostic apparatus including a step (S11) to perform, a step (S12) for operating an application program, and a step (S13) to boot the OS normally, when the power is applied to the CPU ( 12) Scan the PCI BUS 20 to receive the booting step S21 and the scan data for checking the operation of the system CPU from the system PC (step S1-1). In step S22, determining whether the scan time is less than a predetermined time (S23), and if the scan time is greater than the predetermined time in the determining step (S23), the system CPU determines that an error is detected. Step S24 and storing scan data according to the CPU error ( S25), generating a socket according to the CPU error (S26), transmitting the generated Soget to the main server 100 (S27), and the scan time in the determination step (S23) Determining whether there is no abnormality in the CPU when the predetermined time is less than the predetermined time, and storing the scan data accordingly (S28), and terminating the CPU checking process (S29); Initiating a process for checking an (I / O) device (S31), and receiving PCI (S5-1) scan data on whether an error occurs in an input / output (I / O) device of the system. Scanning the BUS 20 (S31), determining whether there is the scan data (S33), and if there is scan data in the determining step (S33), the detected scan data is compared with the old data. Determining whether the current data is the same (S34); If the previous data and the current data are the same in the determination step (S34), storing the scan data and returning to the step S32 (S35), and if there is no scan data in the determination step (S33) or in the determination step (S34) If the detected scan data is not the same as the previous data and the current data, generating a socket according to an error of the input / output (I / O) device (S36), and generating the generated socket (Error code) as a main server. Checking whether an input / output (I / O) device has an abnormality including the step (S37) of transmitting to (100); Initiating a boot check of the operating system (OS) (S41), having a predetermined waiting time for booting (S42), and the signal transmitted from the step (S12) of operating the application program of the system (PC) Determining whether or not the operation of the application program is authorized (S43), and if the normal operation of the application program in the determination step (S43) terminates the program, and if the application does not operate it is determined as a boot failure (Fail) A step (S43) of storing the number of times (n), a step (S45) of determining whether the number of boot failures (n) is less than or equal to a predetermined number (for example, 2) in the step (S43), and the determining step (S45) If the number of boot failures is less than two times, return to the rebooting step of the initial state of the program. If the number of boot failures is two or more times, enabling the boot ROM 19 (S46) and rebooting through the boot ROM 19 is performed. Step (S47), and after the boot recovery program The process of checking the error in the booting operating system (OS) comprises the step (S48) that is running; Has the features, including.

Hereinafter, with reference to the accompanying drawings will be described the present invention in more detail.

1 is a block diagram of the entire management system to which the remote self-diagnosis apparatus and method of a computer according to the present invention is applied.

As shown, the entire management of at least one management target computer (hereinafter, referred to as a PC) through a predetermined management program, and backup the data of the PC (101,102, ..), or the PC (101,102, ..) .) Distribute predetermined application software, self-diagnose the managed PC (101, 102, ..) by remote control of the self-diagnostic card mounted on the managed PC (101, 102, ...), and manage the managed PC (101, 102, When the boot failure or hardware and software failure of the (.)), The main server (or computer) 100 for remote processing (recovery) and the backup of the PC (101, 102, ...) to be managed by connecting to the main server 100 DB (database) 200 for storing data, predetermined application software, and the like, connected to the main server 100 via a network, and equipped with the present invention self-diagnostic apparatus 10 therein, At least one management to receive management of the system under control The target PCs 101, 102, ... are included.

The main server 100 performs functions such as remote failure processing, data management, asset management, distribution management, and status report preparation.

First of all, the remote error handling function is ① remote control of the PC to be managed in real time, ② remote restart of the PC to be managed, ③ OS remote restoration and remote booting function of the PC to be managed, ④ software of the PC to be managed Remote control and restoration function, ⑤ Automatic eradication of virus of the target PC, ⑥ Notification of failure to the administrator (by e-mail, PDA, mobile phone, etc.), ⑦ Chat function, ⑧ Message transmission function, ⑨ Includes multi-user control (control multiple remote PCs from one screen).

The data management function includes ① backup of the management target PC data (data encryption after DB transmission), ② recovery function when the user data of the management target PC is damaged, ③ anti-hacking function, ④ encrypted user authentication function.

The asset management function includes ① hardware and software resource management function of the PC to be managed, ② software license management function of the PC to be managed, and ③ asset management function by individual and group of the PC to be managed.

The distribution management function is ① automatic software distribution function to the target PC, ② automatic redistribution in case of failure to the target PC, ③ target / time setting function for the target PC, ④ individual / group distribution to the target PC It includes ⑤ license retrieval function of managed PC, ⑥ restriction of illegal software use after searching software of managed PC, and ⑦ distribution function considering network load of managed PC.

The present status report function includes ① status report function of hardware, software resource item and additional resource information of software to be managed, ② network, software and hardware information reporting function of managed PC, ③ IP address management function of managed PC, and ④ management It includes asset information retrieval function of target PC, ⑤ user access and distribution status management function of target PC, and ⑥ various report functions of target PC.

2 is an internal circuit block diagram of a remote self-diagnosis apparatus 10 of a computer of the present invention.

As shown, the present invention self-diagnostic apparatus 10 is connected to the monitor, keyboard, mouse, etc. of the PC input and output device connection and processing unit 11 for signal processing, the input and output device connection and processing unit 11 is connected to the operating system A central processing unit (CPU) 12 that is equipped with an OS (e.g. embedded Linux) and uses an independent operating system and centrally controls peripheral devices, and is connected to the CPU 12 and has an internal PCI bus 20 of a PC. PCI control unit 13 to scan the error code to check, the WAN port unit 14 connected to the CPU 12 and connected to the main server 100, IP sharing function and management target PCs and An IP sharing and LAN function control unit 16 connected to the LAN port unit 15 to be connected to the CPU 12 and the LAN port unit 15 for performing and controlling an IP router function and a LAN card function; A communication control unit 17 resumed between the sharing and LAN function control unit 16 and the PCI BUS 14 of the PC, and the CPU The memory 18a and the flash memory 18b connected to the memory 12 and the PCI controller 13 and the communication controller 17 are interposed between the BIOS (Bios) files for booting (Boots) and images are stored It consists of an inboot ROM 19.

The self-diagnostic apparatus 10 configured as described above may be mounted in a slot of a main board of a management target PC in a card form, and may be mounted on a main board by configuring a one-chip integrated circuit.

In addition, although the self-diagnostic apparatus 10 is not shown in FIG. 2, the self-diagnostic apparatus 10 is configured to supply its own power regardless of the presence or absence of the power of the management target PC.

3A and 3B are operational flowcharts showing a remote self-diagnosis method of the computer of the present invention.

First, when the self-diagnosis device 10 is mounted on the management target PC, and power is applied to the management target PCs 101, 102, .., the system PC and the self-diagnosis apparatus 10 are powered by the power supply. Perform each operation at the same time.

First, looking at the system (PC) side, the step of initializing the CPU and memory of the system when the power is applied (S1), the step of reading (Read) the BIOS program stored in the ROM after the CPU initialization (S2), input and output ( I / O) device check process (S3) to transfer to the memory, memory, VGA and other peripheral devices (S4) checking, input and output (I / O) device checking and transmitting the command code (S5) And determining whether an acknowledgment code is received according to the inspection of the input / output (I / O) device (S6), and if the acknowledgment code is not received in the determination step (S6), returns to step S5 and returns the acknowledgment code. In response to the reception of the received input / output (I / O) device, it is determined whether the inspection is ended (S7). If the inspection of the input / output (I / O) device is not completed in the determination step (S7), the next peripheral device is inspected. And returning to the step S4 (S8) and the input / output (I / O) device in the determination step (S7). When the test is finished, copying the boot loader address into the memory (S9), executing the boot (Boot) file copied to the memory (S10), and booting by granting authority to the operating system (OS) Performing step (S11), operating an application program (S12), and booting the OS normally (S13).

Here, the step of reading the BIOS program (S2) further includes the step (S1-1) of scanning data on whether the system CPU is operating.

In addition, after the step (S5) of inspecting the input / output (I / O) device and transmitting a command code, the step (S5-1) of scanning data on whether an error of the input / output (I / O) device is error (S5-1) is performed. More included.

On the other hand, looking at the self-diagnostic apparatus 10 side, when the power is applied to the step of booting itself through the OS mounted on the CPU 12 (S21), and the scan to check whether the system CPU operation from the system (PC) Scanning the PCI BUS 20 to receive data (step S1-1) (S22), determining whether the scan time is 5 seconds or less (S23), and determining (S23) In step S24, if the scan time is greater than 5 seconds, it is determined that the system CPU is an error (S24), storing scan data according to the CPU error (S25), and generating a socket according to the CPU error. In step S26, transmitting the generated sows to the main server 100 (S27), and in the determining step S23, if the scan time is 5 seconds or less, it is determined that there is no abnormality in the CPU and accordingly Storing the scan data (S28) and terminating the CPU check process (S29) Include.

In addition, the self-diagnosis card 10, as shown in Figure 3b, the step of starting a process for checking the input and output (I / O) device (S31), and the error of the input / output (I / O) device of the system (S31) scanning the PCI BUS 20 to receive input of scan data on whether or not an error occurs (step S5-1); determining whether the scan data exists (S33); If there is scan data in S33, the method determines whether the detected scan data is the same as the old data and the new data (S34), and if the previous data and the current data are the same in the determination step (S34). If the scan data is stored and returned to step S32 (S35), and if there is no scan data in the determination step (S33) or the scan data detected in the determination step (S34) is not the same as the previous data and the current data, Sockets due to errors in I / O devices generating a cket (S36) and transmitting the generated socket (Error code) to the main server 100 (S37).

In addition, the self-diagnosis card 10 has a step (S41) to start the boot check of the operating system (OS), and has a predetermined waiting time for booting (for example, three minutes: time can vary) (S42) ), And determining whether the application program is operated by receiving the signal transmitted from the operation (S12) of operating the application program of the system PC (S43), and in the determination step (S43) of the normal application program. In operation S43, the program is terminated, and if the application does not operate, it is determined as a boot failure (Fail) and stored as a number (n) (S43), and the number of boot failures (n) in the step (S43) is a predetermined number of times. (E.g., 2) determining whether it is less than or equal to (S45), and if the number of boot failures is less than 2 in the determination step (S45), the process returns to the rebooting stage which is the initial state of the program. 19 to enable (S46) and the boot ROM (19) Performing a reboot through (S47), and further comprising the step of executing a recovery program after booting (S48).

The overall operation of the remote self-diagnosis apparatus 10 of the computer of the present invention configured as described above will be described below.

First, the main server 100 is managed through the self-diagnostic device 10 mounted on the management target PC (101, 102, ...) when the power is applied to the management target PC (101, 102, ...) managed by the main server 100 The self-diagnosis of the target PCs 101, 102, ... is performed.

In more detail, first, looking at the system (PC) side, when the power is applied, the system (PC) initializes its CPU and memory (step S1).

After initialization of the CPU, the BIOS program stored in the ROM is read and transferred to the input / output device check process memory (steps S2 and S3). Therefore, a peripheral device such as a memory or VGA is inspected (step S4), and a command code according to an input / output (I / O) device test is transmitted (step S5).

At this time, it is determined whether a response code is received according to the inspection of the input / output (I / O) device (step S6). If the response code is not received in the determination step S6, the process returns to step S5. When the response code is received, it is determined whether the inspection of the input / output device is completed (step S7). If the inspection of the input / output (I / O) device is not finished in the determination step (S7), the next peripheral device is inspected and the process returns to the step S4 (step S8).

When the inspection of the input / output (I / O) device is finished in the determination step (S7), the boot loader address is copied to the memory (step S9), and the boot file copied to the memory is executed (step S10).

In addition, the OS is booted by granting authority to the operating system (step S11), and the OS is booted by operating an application program (steps S12 and S13).

As such, when the system is started, the self-diagnostic apparatus 10 is booted by the OS mounted on the CPU 12 when power is applied (step S21).

Then, the PCI BUS 20 is scanned to receive scan data inputted from the system PC (step S1-1) to check whether the system CPU is operating (step S22). (E.g., 5 seconds) or less, if the scan time is greater than 5 seconds, it is determined that the system CPU is an error, and after storing the scan data according to the CPU error, the error data (socket) according to the CPU error To generate, and transmits the generated soget to the main server 100 (step S23 ~ S27).

Accordingly, the main server 100 determines that the CPU of the PC (system) on which the corresponding self-diagnostic apparatus 10 is mounted has an error through the error data input from the self-diagnostic apparatus 10.

In addition, if the scan time is 5 seconds or less in the determination step (S23), it is determined that there is no abnormality in the CPU, the scan data is stored accordingly, and the CPU check process is terminated (steps S28 and S29).

On the other hand, the self-diagnosis apparatus 10 starts a process for checking the input / output (I / O) device as well as the CPU check of the system (step S31).

Accordingly, the PCI BUS 20 is scanned (step S32) in order to receive input of scan data on the error of the input / output (I / O) device of the system (step S5-1). If it is determined in step S33, if there is scan data, it is determined whether the detected scan data is the same as the old data and the new data in step S34.

If the previous data and the current data are the same in the determination step (S34), the scan data is stored and returned to step S32. In the determination step (S33), there is no scan data or the scan data detected in the determination step (S34) If the previous data and the current data are not the same, a socket according to an error of the input / output (I / O) device is generated (step S36), and the generated socket (Error code) is transmitted to the main server 100. (Step S37).

Therefore, the main server 100 has an error in the input / output (I / O) device of the PC (system) on which the corresponding self-diagnostic apparatus 10 is mounted through the error data input from the self-diagnostic apparatus 10. Will be identified.

In addition, the self-diagnosis apparatus 10 starts a boot check to check whether an operating system (OS) is abnormal (step S41).

It has a predetermined waiting time (eg, 3 minutes: the time may vary) for the boot (step S42), and receives the signal transmitted from the step (S12) of operating the application program of the system (PC) The operation of the program is determined (step S43).

When the application program operates normally in the determining step S43, the program is terminated. If the application program does not operate, it is determined as a boot failure and stored as a number n (step S43).

In step S43, it is determined whether the number of boot failures n is less than or equal to a predetermined number (for example, 2) (step S45). If the number of boot failures is less than two in the determination step S45, the initial reboot of the program is performed. Return to step and if the number of boot failures more than two times enable bootrom 19 (S46), reboot through the bootrom 19 (step S47), and after the boot is executed a recovery program (S48) step).

As described above, the self-diagnostic apparatus 10 of the present invention may force the management target PC to be ON through the self-diagnostic apparatus 10 even if the power of the management target PC is not turned on. As described above, the CPU of the management target PC, the I / O device error and the boot error (OS) error can be checked to determine whether there is an abnormality.

In addition, the main server 100 can check the status of the management target PC at a glance by checking the signal transmitted from the management target PCs (101, 102, ...), remotely when an error is detected By repairing itself or by contacting the administrator of the faulty part and the hardware or software to be replaced, the service is started.

As described above, the present invention is installed in the computer to be managed and connected to the main computer (server) through a network to check whether there is an abnormality of the computer to be managed according to the remote control signal of the main computer and the information about this to the main computer. In particular, it is a useful invention that can accurately check the error area of the system after forcibly starting the system through its own operating system even in a condition that the management computer is not booted.

In addition, the present invention has the advantage that it is possible to check the exact error site even when a system failure that the management target computer fails to boot, the administrator can restore the system in the first visit, thereby greatly increasing the efficiency of the management service.

In addition, the present invention can remotely perform the management and control according to the management target computer, such as real-time monitoring, system restoration, data backup and failure management, there is an advantage that can greatly increase the efficiency of the work.

Claims (4)

Manage all the at least one PC to be managed through a predetermined management program, backup and store data of the PC, distribute predetermined application software to the PC, and remotely control the self-diagnosis card mounted on the PC to be managed. Main server (or computer) that self-diagnoses the managed PC and remotely processes (recovers) it in case of boot failure or hardware and software failure of the managed PC, backup data of the managed PC connected to the main server, predetermined application PC remote management system including a DB for storing software, and at least one managed PC connected to the main server via a network and equipped with a self-diagnostic device therein and provided with management of the system under the control of the main server. In The self-diagnostic apparatus is connected to a monitor, keyboard, mouse, etc. of the PC input and output device for connecting and processing the signal processing unit; A central processing unit (CPU) connected to the input / output device connection and processing unit and equipped with an operating system (OS) to use an independent operating system and centrally control peripheral devices; A PCI controller connected to the CPU and checking an error code by scanning an internal PCI BUS of the PC; A WAN port unit connected to the CPU and connected to the main server; A LAN port unit including an IP sharing function and connected to PCs to be managed; An IP sharing and LAN function control unit connected to the CPU and LAN port to control and perform an IP sharer function and a LAN card function; A communication control unit resumed between the IP sharing and LAN function control unit and the PCI BUS of the PC; DRAM and flash memory coupled to the CPU; And A boot ROM interposed between the PCI controller and the communication controller to store a booting BIOS file and an image; Remote self-diagnosis device of a computer, characterized in that it comprises. The method of claim 1, The self-diagnostic apparatus is configured in the form of a card (Card) is mounted in the slot of the main board of the PC to be managed, or a remote self-diagnosis apparatus for a computer, characterized in that the one-chip integrated circuit mounted on the main board. The method of claim 1, The self-diagnostic apparatus is provided with a separate power supply device remote self-diagnostic apparatus of the computer, characterized in that configured to supply its own power regardless of the presence or absence of power management target PC. Initializing the CPU and memory of the system when the power is applied (S1), reading the BIOS program stored in the ROM after the CPU initialization (S2), and sending to the input / output (I / O) device check process memory Step (S3), checking a peripheral device such as a memory or VGA (S4), checking an input / output (I / O) device and transmitting a command code (S5), and the input / output (I / O) Determining whether or not a response code is received according to the inspection of the device (S6), and if the response code is not received in the determination step (S6) and returns to step S5, if the response code is received input and output (I / O) device In step S7 of determining whether the inspection of the end of the check, and if the inspection of the input / output (I / O) device is not finished in the determination step (S7) and the next peripheral device inspection and returning to the step S4 (S8) ) And boot loader once the inspection of the input / output (I / O) device is terminated in the determination step (S7). Step (S9) of copying the text into the memory, executing the boot file copied into the memory (S10), granting authority to the operating system (OS) and performing booting (S11); In the management target PC equipped with a self-diagnostic device, including the step (S12) for operating the application program, and the step (S13) for the OS to boot normally, When the power is applied to the CPU 12 to boot itself through the OS mounted on the CPU (S21), and to receive the scan data to check whether the system CPU operation from the system (PC) to receive the PCI (step S1-1) Scanning the BUS 20 (S22), determining whether the scan time is less than a predetermined time (S23), and if the scan time is greater than the predetermined time in the determining step (S23), the system Determining that the CPU is an error (S24), storing scan data according to the CPU error (S25), generating a socket according to the CPU error (S26), and generating the socket Transmitting to the main server 100 (S27), determining that there is no abnormality in the CPU when the scan time is less than a predetermined time in the determining step (S23), and storing the scan data accordingly (S28); And ending the CPU check process (S29). Check whether the CPU or process; Initiating a process for checking an input / output (I / O) device (S31) and receiving scan data on whether an error occurs in the input / output (I / O) device of the system (S5-1). Scanning the PCI BUS 20 (S31), determining whether there is the scan data (S33), and if there is scan data in the determination step (S33), the detected scan data is the old data (Old data) And (S34) determining whether the new data is the same as the current data, and storing the scan data and returning to the S32 step if the previous data and the current data are the same in the determining step S34, If there is no scan data in the determination step (S33) or the scan data detected in the determination step (S34) is not the same as the previous data and the current data, create a socket according to an error of the I / O device. In step S36, and the generated socket (Error c checking whether an input / output (I / O) device is abnormal, including transmitting an ode to the main server 100 (S37); And Initiating a boot check of the operating system (OS) (S41), having a predetermined waiting time for booting (S42), and the signal transmitted from the step (S12) of operating the application program of the system (PC) Determining whether or not the operation of the application program is authorized (S43), and if the normal operation of the application program in the determination step (S43) terminates the program, and if the application does not operate it is determined as a boot failure (Fail) A step (S43) of storing the number of times (n), a step (S45) of determining whether the number of boot failures (n) is less than or equal to a predetermined number (for example, 2) in the step (S43), and the determining step (S45) If the number of boot failures is less than two times, return to the rebooting step of the initial state of the program. If the number of boot failures is two or more times, enabling the boot ROM 19 (S46) and rebooting through the boot ROM 19 is performed. Step (S47), and after the boot recovery program The process of checking the error in the booting operating system (OS) comprises the step (S48) that is running; Remote self-diagnosis method of a computer, characterized in that it comprises a.