Here are some troubleshooting steps to take when your computer fails to boot correctly :
1. Press F8 at boot until the advanced options appear when you let go, select "Last Known Good Configuration" and press Enter to repair.
2. Please turn on the computer and press F8 to enter the safe mode. Use the system restore that comes with the system, restore to the time you do not have this failure to repair.
3. If the fault persists, use the system disk to repair it, open the command prompt and enter SFC /SCANNOW (there is a space between SFC and /), insert the original system disk to repair the system, and the system will automatically compare and repair it.
4. If the fault persists, set the CD-ROM drive as the first boot device in the BIOS and insert the system installation disk and press the R key to select "Repair Installation"
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5. If the fault persists, it is recommended to reinstall the operating system.
The various diagnostic methods for failing to start the operating system are as follows.
First, check whether the computer has started the operating system when it is turned on. If the operating system crashes, blue screen, or automatic restart when starting the operating system, it means that the partition table and master boot record of the hard disk is normal. Exclude the damage of the hard disk partition table, the master boot record of the hard disk, and the loss of the end flag of the hard disk partition. Then use the following method for diagnosis.
Step 1: First start the computer in safe mode to see if it can be started. If it can’t be started, it may be infected with a virus, lost system files, damaged operating system, bad sectors on the hard disk, conflicting hardware devices, or hardware problems, go to Step 4: If you can start the safe mode, it may be caused by incompatibility between the hardware driver and the system, a problem with the operating system, or a virus infection.
Step 2: Then run the anti-virus software. If there is a virus, it may be caused by the virus. After the virus is removed, restart the computer. If it is not normal, you need to reinstall the operating system.
Step 3: If no virus is detected, you can use the "System Restore" function that comes with the operating system to restore the system. After the restoration, if the system is normal, the failure is caused by system damage. If the fault persists, it may be caused by the incompatibility between the device driver and 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 every time a device is installed, to check whether it is After finding out which device's driver caused the fault, download the new version of the driver of the faulty device, and then install it.
Step 4: If you can't 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 during the installation of the operating system, such as a crash, blue screen, restart, etc., which causes the system to be unable to install, it should be caused by hardware problems or poor hardware connections.
Step 5: Then clean the dust in the computer, clean the gold fingers of 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, it is a fault caused by poor contact.
Step 6: If the system still cannot be installed, it may be caused by a hardware problem. Then use the replacement method to check the hardware failure, and replace the hardware when found.
Step 7: If the operating system can be installed normally and the fault disappears after the installation, it is a fault caused by a damaged system file.
Step 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 fails to start, it is caused by bad sectors on the hard disk. Then use the NDD disk tool to repair bad sectors.
Step 9: If you can start the safe mode, it is caused by the incompatibility between the device driver and the system. Then delete the sound card, video card, network card, and other devices, and then install the drivers one by one, install one and start it once, to check which device's driver caused the fault. After finding out, download the new version of the driver of the faulty device, and then install it.
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