There are two situations when the computer cannot boot into the system: if the self-test fails but there is a hardware problem, and if the self-test fails but fails to enter the desktop, it is a system or driver problem.

1. Self-test If I can pass it but cannot enter the desktop, it is a problem with the operating system or driver: (xyz5819 心空space)

Why can't the computer restart normally and fail to enter the desktop or have a blue screen of death? (xyz5819 minded spacetime)

When excluding viruses, it is usually because the GHOST version or other modified version of the operating system is installed. Because a large number of drivers that are not suitable for your hardware device have been integrated in advance, the system cannot correctly identify and It is caused by loading the necessary hardware devices for the system. (xyz5819 Idea Space and Time)

Re-downloading and installing the original image installation version of the operating system and installing all drivers with Microsoft WHQL certification can correct such errors. (xyz5819 The Space and Time of Thoughts)

Then there are conflicts caused by software with duplicate functions in the system (such as installing 2 or more types of anti-virus software, firewalls, and ad blocking). (xyz5819 The Space of the Thoughts) )

If it is confirmed that it is not a system or software problem, you need to test the hardware in the following order. First, the memory is most likely, then the CPU, then the hard disk, and finally the graphics card. The motherboard will basically not have a blue screen. . (xyz5819 The Space and Time of Thought)

In addition, you need to check whether poor heat dissipation is causing the machine to overheat (if so, you must install a more powerful radiator, re-coat the thermal grease, and replace the powerful fan). (xyz5819 The Space of the Thought) )

Check whether the top of the motherboard capacitor is bulging (if so, it must be replaced immediately). (xyz5819 Idea Space and Time)

You also need to check whether the chassis power supply is insufficient, causing the output voltage Unstable (if any, it must be replaced immediately) (xyz5819 Mind Time and Space)

If the power-on self-test fails and no "beep" sound is heard, there must be a hardware failure and a small speaker (buzzer) is required. Preliminary judgment of the alarm sound in order to narrow the scope of the hardware failure. For the specific meaning of the power-on alarm sound, please refer to your motherboard manual. (xyz5819 Mind Time and Space)

Laptops generally cannot solve hardware failures themselves, so it is recommended to send them to after-sales service Or have it professionally repaired. (xyz5819 Space and Time)

If you don’t want to reinstall, try booting F8 into safe mode to uninstall the incompatible driver of the hardware device (that is: open the device manager>right-click each device)>Properties>Driver>Digital Signature Program>Drivers that do not have "Microsoft Windows Hardware Compatibility Publisher">are drivers that have not been digitally signed by Microsoft. If there are such drivers in the system, various problems will occur. ), after booting up, automatically identify the hardware device, reinstall the driver you downloaded (WHQL) that has passed Microsoft digital signature certification, and then restart the computer again to see if there is any improvement. (xyz5819 Idea Space and Time)

Friendly reminder: As long as the driver is usable, be sure not to blindly chase new ones. Otherwise, installing incompatible drivers will cause the system to run unstable and often cause a blue screen of death. (xyz5819 Idea Spacetime) recommends that you start with your specific driver. Download drivers with Microsoft WHQL certification from the hardware device manufacturer or driver home. (xyz5819 Mind Time and Space)

Appendix Microsoft explanation: The driver is not digitally signed, which means that the driver has not passed Microsoft's Windows Hardware Quality Laboratory (WHQL) testing. Installing drivers without digital signatures can cause instability in the operating system and even cause a blue screen of death. You can obtain WHQL-signed drivers from the manufacturer of your hardware device.

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If you can’t find it, just download a driver wizard or driver life, which will automatically help you find the corresponding driver when connected to the Internet.★Note★Be sure to download and install it through ( WHQL) certified driver ★(xyz5819 idea time and space)

In addition, friends can download BlueScreenView and use it to read C:\Windows\minidump\*.dmp files to see which files are causing the problem This kind of blue screen error. (xyz5819 Thought Space and Time)

For more help, please go to Microsoft Help and Support> and enter the specific blue screen code to query or ask questions. (xyz5819 Thought Space and Time)

What should I do if the computer starts the self-test but does not hear a "beep" sound? (xyz5819 The Space-Time of the Thoughts)

If the computer fails to self-check after startup and does not hear a beeping sound, there must be a hardware failure.

It is necessary to troubleshoot and check from the following aspects: (xyz5819 Mind Time and Space)

1. The system time cannot be displayed and saved correctly because the motherboard battery is insufficient. Replace the motherboard battery with a new one, and press the DEL key to enter the BIOS after booting to reset the correct system time. This type of fault can be solved. .

2. Check whether the motherboard capacitor is bulging or leaking. If so, you need to go to a professional computer repair place to replace the motherboard capacitor. (xyz5819 Idea Space and Time)

3. Unplug Remove the memory module, wipe the gold finger with an eraser and reinsert it into the memory slot.

4. Reinsert all hardware and connecting cables firmly to avoid virtual connections.

5. Start it once with the case open to see if the fan is running normally. If it is not working properly, it needs to be replaced.

6. Check whether the power supply of the case is insufficient. If you have a replacement power supply on hand, try replacing it.< /p>

7. Is there a hard disk failure and bad sectors? Enter the BIOS and see if the hard disk can be recognized. (xyz5819, Space and Time)

8. There is no signal on the monitor, so focus on checking the display part. Connection status, black screen or blurred screen may be a problem with the graphics card or the monitor itself.

9. Based on the alarm sound of the small speaker (buzzer) on the boot case and your specific BIOS, a preliminary judgment can be made to narrow the scope of the problem. .For the specific meaning of the power-on alarm sound, please refer to your motherboard manual.

10. That’s all I can think of for the time being. Other components will also be checked step by step using the substitution method or the minimum loading method. (xyz5819 idea Time and space)

Sweat~ You didn’t say it was a diskless system in an Internet cafe at first, but you added it later~!

I really don’t know about this, I’ve never used it. I won’t mislead you with random talk. Let’s wait for other experts to help you answer~