What should I do if the computer turns on the opportunity to automatically blank the screen?

The causes and solutions of the black screen after the computer is turned on are as follows:

1. Because the fan is automatically controlled, the CPU will block slowly for a while. When the temperature is too high, it will speed up the operation. When the temperature reaches the limit, it will start the over-temperature protection and shut down. In the final analysis, it is caused by poor heat dissipation of CPU.

Solution: Check whether the silica gel is coated properly and whether the fan is installed in place.

2. There is something wrong with the startup circuit of the motherboard, such as clock, reset, power supply, MOS tube, etc. , which may cause frequent black screen in use, and I/O and south bridge virtual welding problems, often black screen.

Solution: Repair the motherboard (if it is under warranty and after sale).

3. You can see the black screen of English letters after booting, which is due to software. Generally, the system is broken, the master boot record is damaged, the partition table is damaged, and the startup item is set incorrectly, resulting in a black screen.

Solution: Reload the system, rebuild the master boot record, rebuild the partition table, and reset the first startup repair.

4. It may be that the VGA video connection between the computer host and the monitor is not well connected (especially the interface is not plugged in), and there may be something wrong with the VGA connection data cable, which will lead to frequent black screen.

Solution: Therefore, plug the connection data cable again or replace it.

5. The gold finger of the memory or graphics card is oxidized, resulting in poor contact between the memory and the memory slot, and poor contact between the graphics card and the graphics card slot, resulting in failure to boot or sudden black screen.

Solution: Turn off the power supply, open the chassis, remove the memory and discrete graphics card, wipe both sides of the gold finger of the memory (that is, the part with copper sheet) with an eraser, and then insert it back. Discrete graphics cards are handled in the same way. Then, install the chassis and plug in the wires.

6. Make sure the monitor is not damaged. The graphics card is firmly installed. Please change the channel and make sure the monitor turns black again. The original monitor may be damaged.

Computer black screen is a relatively easy phenomenon, especially for some older computers or assembled computers. There are many reasons for the failure of computer black screen, such as the damage of monitor, motherboard and graphics card, poor contact of graphics card, high temperature of power supply, cpu and parts. Also have a plenty of artificial computer black screen, such as Microsoft China's genuine verification.

In the internal mail of Microsoft dated June 5438+1October 65438+May, 2008, Microsoft will launch a genuine verification plan for Windows XP Professional Edition and Office for the China market on the 20th. At that time, computers with pirated Windows XP Professional Edition will be forced to "black screen" every hour (the desktop background will turn to pure black), the menu bar of Office will be marked as "non-genuine", and users of pirated software will encounter "non-genuine" computers respectively.