What to do if the computer system crashes and cannot be booted

What should I do if my computer system crashes and cannot be booted?

The reason may be caused by system damage. It is best to try another operating system.

1. Turn on the computer and keep pressing F8 without letting go, then select "Last Known Good Configuration" and press Enter.

2. Please turn on the computer and press F8 to enter the safe mode and use the system restore that comes with the system to restore it to the time when this fault did not occur.

3. If the fault persists, use the system disk to repair it. Open the command prompt and enter SFC /SCANNOW and press Enter (there is a space between SFC and /). Insert the original system disk to repair the system. The system will automatically compare and repair it. of.

4. If the fault persists, set the optical drive in the BIOS as the first boot device, insert the system installation disk, and press the R key to select "Repair Installation".

5. If the fault persists, it is recommended to reinstall the operating system.

If that doesn't work, it is recommended to choose repair installation, which will repair the system and prevent the programs and files on the C drive from being lost.

The various diagnostic methods for the inability to start the operating system are as follows.

First check whether the computer has started to start the operating system when it is turned on. If it freezes, blue screen, or automatically restarts when starting the operating system, it means that the hard disk partition table and master boot record are normal, and the causes of the problem include damage to the hard disk partition table, damage to the hard disk master boot record, and loss of the hard disk partition end mark.

Then use the following method to diagnose.

1. First, start the computer in safe mode and see if it can start. If it cannot start, it may be due to virus infection, system file loss, operating system damage, bad sectors on the hard disk, conflict with hardware devices, or hardware failure. If there is a problem, go to step 4; if safe mode can be started, it may be caused by the hardware driver being incompatible with the system, a problem with the operating system, or a virus infection.

2. Then run the anti-virus software. If there is a virus, it may be caused by a virus. Restart the computer after anti-virus. If it is still not normal, you need to reinstall the operating system.

3. If no virus is detected, you can use the "System Restore" function that comes with the operating system to restore the system. If the system is normal after restoration, the failure is caused by system damage. If the fault persists, it may be caused by the incompatibility of the device driver with the system; then delete the drivers for the sound card, graphics card, network card and other devices, and then install the drivers one by one. Restart the computer after each device is installed to check whether After finding out which device driver caused the fault, download the new version of the driver for the faulty device and then install it.

4. If you cannot boot from safe mode, then use the installation CD to reinstall the operating system. If the operating system can be installed normally, go to step 7; if there is a failure when installing the operating system, such as a crash, blue screen, restart, etc. that prevents the system from being installed, it should be caused by hardware problems or poor hardware contact.

5. Then clean the dust in the computer, clean the golden fingers of the memory, graphics card and other equipment, reinstall the memory and other equipment, and then reinstall the operating system. If the system can be installed normally, the fault is caused by poor contact. .

6. If you still cannot install the system, the fault may be caused by hardware problems. Then use the replacement method to check for hardware faults, and replace the hardware if found.

7. If the operating system can be installed normally and the fault disappears after installation, the fault is caused by damage to the system file.

8. If the fault persists after installing the operating system, it may be caused by bad sectors on the hard disk or incompatibility between the device driver and the system. Start the computer in safe mode. If it cannot start, the problem is caused by bad sectors on the hard disk. Then use NDD Disk Utility to repair bad sectors.

9. If safe mode can be started, it is caused by the incompatibility between the device driver and the system. Then delete the sound card, graphics card, network card and other devices, and then install the drivers one by one. Install and start each one to check which device driver caused the failure. After finding out, download the new driver for the faulty device and then install it.

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