The reason why the computer can not open the machine and the solution steps

A lot of netizens don't know what the reason why the computer can't open the machine, how to solve it.

Restore the BIOS to the default location: If you are not restoring the BIOS to the factory settings, you can also try to discharge the BIOS battery. If it doesn't work, fix the system. 1, boot press F8 does not move to the advanced option appears in the loose hand, select “ the last time the correct configuration & rdquo; carriage return repair. 2, please press F8 to enter the safe mode and restore the system with the system's own system, restore to the time you did not appear this fault. 3. If the fault persists, use the system disk repair, open a command prompt and enter SFC /SCANNOW Enter (there is a space between SFC and /), insert the original system disk repair system, the system will automatically compare and repair. 4. If the fault persists, set the CD-ROM drive in the BIOS to insert the system startup disk into the system installation disk and press R to select “fix installation” 5. If the fault persists, it is recommended to reinstall the operating system. If it doesn't work, it is recommended to choose to repair the installation, which will fix the system and make the C drive's programs and files free from loss. A crash occurs when the computer starts up. It can be divided into two types: the power-on self-test is a crash and the operating system crashes. The specific maintenance method for the crash of the computer during self-test is as follows. (1) First determine the situation before the computer fails. If the computer crashes after moving, it may be that the computer is greatly shaken during the movement, causing the internal parts of the computer to loosen and the contact is bad. Open the case and re-fasten the memory, graphics card and other equipment. (2) If the computer fails to boot after upgrading the BIOS program, the BIOS program upgrade may fail or the upgraded BIOS program file is not compatible with the computer hardware. Use the original BIOS program file to restore. (3) If the computer fails to boot after setting the BIOS program, modify the set BIOS settings or use the “LOAD BIOS DEFAULTS” option in the BIOS program to restore the BIOS program. Just fine. (4) If the computer fails to boot after CPU overclocking or upgrade, it may be due to CPU overclocking or upgrade caused by computer crash, restore the CPU frequency to normal frequency or restore to the state before the upgrade. (5) If the screen is turned on, the display screen prompts “Keyboard Error” or “Hard disk install failure”, etc., indicating that the related equipment is not connected or damaged, reconnect or replace the fault. The device is OK. (6) If the screen prompts “Disk Boot Failure”, the system file is lost or damaged, or the hard disk partition table is damaged. Repair the system file or restore the hard disk partition table. (7) If it is not the above problem, then check if the inside of the chassis is clean, because the dust corrodes the computer circuit and the interface will cause poor contact between the devices, causing a crash, so clean the dust and the device interface, and the dust-related fault can be eliminated. (8) If the fault is not eliminated, the replacement method is used to eliminate hardware device compatibility problems and quality problems. The troubleshooting method for a crash when the computer loads the operating system is as follows. (1) First judge based on the displayed error message. If the system file is not found at startup, the system file may be missing or damaged. During maintenance, you can copy lost files from the computer of the same operating system to the faulty computer (some system files are not common). (2) If a blue screen appears at startup, the system file cannot find the specified file, which is caused by the bad track of the hard disk and the computer cannot read the system file. Start the computer with the boot disk, run “Scandisk” disk scanner to detect and repair bad sectors of the hard disk. (3) If there is no such fault, first use anti-virus software to kill the virus, and then use “ safe mode & rdquo; start the computer. If you can't start it, you may be mainly corrupted system files and reinstall the operating system. (4) If you can start the computer with “Safe Mode", then exit and restart the system to see if it crashes. (5) If you still crash, then use the backup Windows registry to restore the system (if the system can not be started, use the boot disk), after recovery, see if it is normal. (6) If it still crashes, then enter “Safe Mode”, open the “Start/Run” dialog box, enter sfc and press Enter to start the “System File Checker” and start the detection system. If an error occurs, the screen will prompt for the name and path of the specific damaged file. Then insert the system CD and select the “Restore File” command. The lost or lost file will be restored. (7) Finally, if the system still freezes, reinstall the operating system. Discharge the BIOS battery (restore the BIOS default). It is recommended to plug in the graphics card, memory, clean up the sanitation, and polish the gold finger of the graphics card and memory. The various diagnostic methods for starting the operating system cannot be started as follows. First check if the computer has started booting the operating system when booting. If the system is dead, blue screen or automatic restart when starting the operating system, the partition table and master boot record of the hard disk are normal, and the fault of the hard disk partition table is damaged, the hard disk master boot record is damaged, and the hard disk partition end flag is lost. 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 virus, system file is lost, operating system is damaged, hard disk has bad track, hardware device has conflict or hardware has problem. Step 4; If you can start the security mode, it may be caused by the hardware driver is not compatible with the system, the operating system is faulty or infected with viruses. Step 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 not normal, you need to re-install 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. If the system is normal after the restore, the fault is caused by the system damage. If the fault persists, it may be caused by the device driver being incompatible with the system; then remove the drivers of the sound card, graphics card, network card, etc., and then install the drivers one by one, restart the computer once each device is installed, check to see Which device's driver caused the failure, after detecting it, download the new version of the faulty device driver, and then install it. Step 4: If you cannot boot from Safe Mode, then reinstall the operating system with the installation CD. If the operating system can be installed normally, go to step 7. If there is a failure when installing the operating system, such as crash, blue screen, reboot, etc., the system cannot be installed, it should be caused by hardware problems or poor hardware contact. Step 5: Then clean the dust in the computer, clean the memory, graphics card and other equipment gold fingers, re-install the memory and other equipment, and then re-install the operating system, if the system can be installed normally, it is a malfunction caused by poor contact. Step 6: If you still can't install the system, it may be a malfunction caused by a hardware problem. Then use the replacement method to check the hardware failure, find the hardware and replace it. Step 7: If the operating system can be installed normally and the fault disappears after installation, it is a fault caused by system file corruption. Step 8: If the fault persists after installing the operating system, it may be caused by a bad track on the hard disk or the device driver is incompatible with the system. Start the computer in safe mode. If it cannot be started, it is a fault caused by bad sectors on the hard disk. Then use the NDD disk tool to repair bad sectors.

Step 9: If the security mode can be activated, it is caused by the device driver being incompatible with the system. Then delete the sound card, graphics card, network card and other devices, and then install the drivers one by one, install a boot once to check which device driver caused the fault. After detecting it, download the new driver for the faulty device and install it. "