9 major methods to quickly solve the problem of computer black screen

Computer black screen and blue screen are relatively easy to appear in the user's computer, some older computers or assembled computers are more likely to appear. There are many reasons for the black screen of the computer, such as damage to the monitor, damage to the motherboard, damage to the graphics card, poor contact of the graphics card, power supply damage, cpu damage, excessive component temperature, etc. How to solve the problem of the black screen of the computer?

Black screen of the computer Fault 9 solutions

Have you ever encountered your own computer suddenly turned black? First, we have to check if the power is disconnected, but this situation is rare, but it can not Excluded. Most of the black screens are caused by a malfunction of a certain part of the computer, such as damage to the hard disk, damage to the motherboard or graphics card.

First, check the power of the host, whether the work is normal. First, determine if the host system has received power supply by looking at the power indicator of the main unit chassis panel and whether the power supply fan is rotating. Secondly, use a multimeter to check whether the external voltage meets the requirements. If the voltage is too high or too low, it may cause overvoltage or undervoltage protection of the host power supply. In addition, it is important to check the quality of the power switch and reset button and the correct connection between them and the motherboard. Because the power switch and reset button on many inferior chassis often occur after several times of use, it will cause damage. The black screen of the machine is not displayed. If the power supply is damaged, you can solve the problem by replacing the power supply.

Second, check if the monitor power is connected. When the monitor is powered up, there is a sound of “嚓” and the power indicator of the display is on. When the user moves to the monitor screen, there is a “咝咝” sound, and the back of the hand is erected.

3. Check if the display signal line is in good contact with the display card. If there is a lot of dirt at the interface, broken needles and other damage will lead to poor contact and the display will be black.

Fourth, check if the display card works normally. Check whether the chip on the display card can burn, the crack marks and the cooling fan on the display card work, and the heat dissipation performance is good. Change to a working card to check if the card is damaged.

5. Check if the display card is in good contact with the motherboard. If the display is black and the speaker inside the main unit emits a short beep, it indicates that there is a problem with the connection between the display card and the main board, or there is a problem with the connection between the display card and the display. It is important to check whether the slot contact is good. If there is any foreign object in the slot, change the display card to a motherboard slot for testing to determine if there is a problem with the slot.

6. Check if the memory module is in good contact with the motherboard, and the quality of the memory module is too good. If the computer starts up with a black screen and the host emits a continuous beep, it indicates that there is a problem with the memory module. You can focus on checking the installation and contact of the memory and the memory slot, re-plugging the memory module once, or replacing the new memory module.

VII. Check if the fan inside the chassis is rotating. If the cooling fan inside the chassis is damaged, it will cause poor heat dissipation. In severe cases, the CPU and other components may be damaged or the computer will automatically stop and protect, and an alarm sounds.

VIII. Check if other boards (such as sound card, decompression card, video, capture card) and the motherboard slot are good and the driver signal cable is connected correctly. This is often overlooked by many people. It is generally believed that the black screen of the computer is a problem in the display part, and has nothing to do with other devices. In fact, due to the incorrect installation of sound card and other equipment, the system initialization is difficult to complete, especially the data line interface of the hard disk, and it is easy to cause no display failure.

IX. Check if the CPU is overclocked, whether the CPU is in good contact with the motherboard, and whether the CPU cooling fan is intact. If overclocking results in a black screen, then the CPU will jump back to the original frequency. If the contact is poor, remove the CPU and reinstall it, and use a high-quality high-power fan to dissipate heat from the CPU.

Of course, now the network technology is developed, the reasons for the black screen are also endless, "black screen", the Trojan has hacked the boot program of the computer system, indirectly launch other malicious programs to change the home page, play advertising and hacking, also caused each A situation in which the black screen is turned on a second time, so solving the black screen problem starts from the actual problem.