Computer black screen phenomenon confluence

What do we do when the computer hits the black screen? I believe that a lot of friends have been confused about this problem, and a but it happened in their own body is difficult to solve, today I give you a few methods to quickly solve the computer black screen is like, after groping I put this issue together today.

1. Computer boot black screen, power supply fan and CPU fan are normal rotation, but the monitor without any display, no alarm sound.

Check key device steps, primarily to check memory, graphics and other devices can work properly, here, you can first pull out the memory, boot, listen to whether there is alarm sound to the beginning, if there is, the previous steps are normal, the main problem is in memory and graphics card, you can use the substitution method to determine the problem, You can also use the alarm sound to determine the source of the failure. If the memory unplugged, boot without any alarm, without excluding the alarm sound problems, you can first determine the problem appears in the previous steps.

2. Computer boot black screen, display information, the boot to enter the desktop when suddenly black screen.

Most of this phenomenon is caused by viruses, see whether to enter Safe mode (power-on press F8), if you can, please check your startup project, start the service, start the drive, you can use the site "Windows Cleaning Assistant +sreng" method to remove the virus, if not, then the system may have been damaged, Please restore or redo the system (hehe), also may be the power supply instability caused this problem, replace the power check.

Computer boot black screen, that is, press the power button, Power indicator light, monitor screen does not show. From a professional point of view, the BIOS does not self-test properly.

3. Computer boot black screen, performance for the power supply fan and CPU fan rotation after a few seconds to stop, the motherboard on the LED is not bright, the computer has no response.

Solution: First of all, use the minimum startup method to detect computer hardware failure (remove memory card, IDE device, floppy drive and PCI device, and then troubleshoot).

Notebook computer attention, this is partly due to the fact that computer manufacturers have set up a lock touchpad function in the BIOS. Causes the boot black screen. Just press the POWER switch and let go. continue to press the key combination Fn+f7, part of this, and the other part is fn+f5. And so on. The main is to press the touch screen to unlock the key combination.

4. The computer turns on the black screen, performance is the power supply fan and the CPU fan does not move, the motherboard's light is not bright, the computer does not have any reaction.

This time, first you should check whether your power outlet is energized, the various power connectors are not good, the connection is normal, if the confirmation is correct, then please replace your power supply and try again.

5. Computer boot black screen, power supply fan rotation normal, CPU fan does not move, no alarm sound, performance for the motherboard has no response.

This time you should first check the power supply and the motherboard power connection is plugged, if the check is tight, it may be the motherboard seriously damaged or the power supply and motherboard connection damage. Replace the power supply attempt to exclude the second possibility; Please check the motherboard exception, such as whether there is a capacitor bulge (was penetrated), the motherboard surface has no obvious damage to the line, etc., you can get the repair station under inspection, conditional words can be replaced by a motherboard to determine.

Finally, I remind friends to pay attention to our computer fan and electrostatic situation, must be very good to keep your computer to static electricity, and then conditional can give the computer to do a ground to deal with black large reduction of the occurrence of black screen.

Related tutorials:

The reason analysis of computer black screen

Black screen solution after computer boot

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