What should I do when the computer is black? Solve the problem of computer black screen boot

I believe everyone has met this computer black screen and solved it. But have you seriously summarized the cause? So how should we solve it? You may not know this, but I believe you have never met a computer black screen user. What should you do if a computer black screen suddenly occurs? Not afraid. This time, the computer knowledge editor will analyze it for you. The specific tutorial is as follows, hoping to help you: 1. Handling of black screen faults if no power is available 1. Check whether the chassis power interface and power cord are in good condition. If the interface and power cord are broken, replace them in time. 2. Check the power cord plug-in of the motherboard. If there is no damage, unplug the plug-in and insert it again. Generally, this can solve the problem of no power supply caused by poor contact on the motherboard. 3. Check the power supply of the chassis. We usually use the replacement method to check the power supply. We will try the power box on another computer, someone introduced another method to test whether the ATX power supply works properly. First, check the external switch on the power supply box to see if it is on the OFF file. then, switch the power cord to the 115V file so that the power cord on the power box will have electricity. second, prepare a 6-7 cm power cord, connect the power cord with the power cord plug-in, and check whether the power cord of the hard drive CPU fan drive is connected. Again: if there is a secondary switch behind the power supply box, it will be turned on. Finally: Check the power supply fan if the power supply of the chassis, the power supply fan of the chassis will not turn 4. Check the switch on the power supply of the chassis to see if the connection to the motherboard is correct. Check the jumper on the motherboard, find the jumper of the control power supply, and try to shorten the patch cord. If the motherboard can run normally, it indicates that the patch cord has a problem. The main reason is that the Jumper pin and the Jumper CAP cannot be in good contact, and the short jumper pin can make the two completely coupled. In addition, during the operation, be sure not to let the motherboard come into contact with the metal chassis. Generally, we take the motherboard and power supply from the chassis and place them on a non-conducting object, such as a wooden desktop, if there is static electricity import, it may lead to a short circuit on the motherboard, so we should pay special attention to this. 2. Handling of black screen faults with electric display. 1. Check all cards, video cards, and sound cards. Check whether the CPU memory stick is properly installed, the stupid way is to pull them out and plug them in again. 2. if the problem is too serious, you have to use the most cruel method to unplug all secondary components and disconnect all secondary power cords, including IDE software drives and other devices, all you need is the most basic Initial Startup, self-check screen memory data motherboard CPURAM graphics card, etc. If the self-check is passed, add other components one by one to self-check once. If the self-check fails, you can solve the problem, such as incorrect installation or incompatibility. 3. If you can also buy a POST diagnostic card for self-check of power supply, the POST card can identify the cause of the system crash during startup.