What are the reasons that can cause a black screen on your computer?

Since you can start normally after restarting it a few times, then it mainly depends on the memory and graphics card 2 pieces, take it down and wipe it, if it doesn't work, it's best to use another computer's memory and graphics card to change it.

Memory-motherboard-power-graphics card are all possible.

It is recommended to try reinstalling the graphics card driver. There are many reasons that can cause your screen to shake or flicker. Try the following:

1。The monitor refresh rate is set incorrectly. If the refresh rate is set too low, it will cause the screen to shake.

The check method is to right-click on the empty area of the system desktop and click the "Properties" command from the pop-up context menu.

What causes a black screen on a computer? 1. Computer host failure.

1) Failure caused by the power supply of the host.

Black screen failures caused by a damaged host power supply or poor host power quality are common. For example, when some new equipment is added, the display has a black screen failure, after eliminating the quality and compatibility problems of accessories, the quality of the power supply is not good, and the lack of power is the main cause of the failure, at this time, you may also hear the horn in the machine 12 consecutive alarms, replacing the high-power and high-quality power supply is the best solution to this kind of failure. In addition, some motherboards have ATX dual power connectors, and the wrong choice of jumper settings can also cause this kind of failure.

2) Failure caused by the quality of accessories.

Poor quality or damage to computer accessories is the main cause of black screen failure of the monitor. For example, problems with the motherboard (and the CMOS of the motherboard), memory, graphics card, etc., may definitely cause a black screen failure. If the fault is orange, the replacement method is the fastest solution to replace the graphics card, memory, and even the motherboard and CPU.

3) The quality of the connection between the accessories.

The incorrect or loose plugging between the memory, graphics card, etc., and the motherboard is the main reason for the failure of the black and silver macro screen. Moreover, if there is a problem with the connection between the graphics card and the monitor, this kind of failure may also be caused, until the AT power supply is not plugged in correctly, and even if the hard disk or optical drive data cable is reversed, it may also cause the boot black screen failure.

4) Black screen glitch caused by overclocking.

Overclocking or overclocking parts that are not suitable for overclocking will not only cause a black screen failure, but also cause damage to accessories in severe cases. In addition, excessive overbeat, touching the frequency, or giving parts that are not suitable for overclocking, poor heat dissipation after overclocking, or heat dissipation fan damage in ordinary use, does not rotate at all, etc., will cause the system to self-protect and crash black screen.

5) Black screen caused by other reasons.

Others, such as incorrect CMOS settings on the motherboard and incorrect clearing of CMOS jumpers on the motherboard, can cause a black screen failure, in this case, you can change the settings according to the instructions of the motherboard. In addition, software conflicts, such as driver problems, improper installation, improper DIY, such as incorrect BIOS flashing, incorrect power management settings, hardware damage caused by malignant viruses (such as CIH), etc., may cause the appearance of black screen failures on the display. When you encounter this kind of failure, you may wish to think more carefully, consider the causes of the failure, and solve the failure, know yourself and the other, and get twice the result with half the effort.

6) If the floppy drive has floppy disks.

If the floppy drive has a floppy disk, many times it will cause the computer to turn on or restart, the computer will have a black screen, and it will not be able to enter the system. To avoid such situations, it is also possible to cancel the floppy disk boot item in the BIOS.

What causes a black screen on a computer? 2. The display itself is faulty.

1) The AC power supply is insufficient.

The external power supply is insufficient, causing some old displays or some displays with high power consumption to fail to start normally, which is one of the causes of the black screen failure caused by the failure of the display itself. Or the external power supply voltage is unstable, too high or too low may cause the display to not work.

There are many reasons for a black screen, and here is a simple category.

First, system failure, there are files that are corrupted, files are missing, parameter errors and so on.

Second, the Trojan virus, in fact, is also the code mask system file is destroyed and tampered with, but it is more common, so it is listed separately.

Third, the software conflict sock mold is empty, and the software or system files compete for memory resources, resulting in a black screen into the system.

Fourth, hardware failure, almost all hardware can cause a black screen.

Fifth, peripherals. I don't classify this scientifically.,I'm not a host, I'm a peripheral.。 Monitors, keyboards and mice, all kinds of cables, printers, I haven't seen this problem, but I don't pack tickets, I don't ask questions.

Sixth, the resolution setting is beyond the display range of the monitor. Select the lowest resolution to enter the system when booting up. This single category is because it often appears and is simple, and everyone can solve it by themselves by mentioning it.

1) The monitor is powered off, or the monitor data cable is in poor contact. In addition, the computer has been used for a long time, and the power cord of the monitor is easy to oxidize and damage;

2) There is no power supply to the motherboard;

3) Poor or damaged graphics card reconnection or rejuvenation;

4) Poor CPU contact;

5) Poor contact of memory modules;

6) The machine is infected with CIH virus, and the BIOS is refreshed destructively;

7) Check the plugging and unplugging, if necessary, use a rubber to remove the oxidized Fengshi film on the gold finger;

8) If the floppy drive has a floppy disk, many times it will cause the computer to start or restart, and the computer will have a black screen and cannot enter the system. To avoid such situations, it is also possible to cancel the floppy disk boot item in the BIOS. Specific.

The first reason is a system failure.

If there is a problem with your computer's system, such as the installed patches are incompatible, or the software is incompatible, or the driver is incompatible, and the system itself is missing some files will lead to a black screen.

1. Turn off the computer and turn it back on while turning it on, press and hold the F8 key on your keyboard to enter the advanced boot options.

2. After entering the advanced boot options, select Collapse Land to perform the last correct configuration from your advanced boot options. Then press enter, and after the execution is completed, you can enter the system.

The second reason is that the BIOS is not set up, that is to say, the BIOS of your computer is not set as the first boot item when the BIOS is set, this reason, the solution is to press F2 to enter the BIOS, and then enter the boot menu to set your hard disk as the first boot item in it, you can.

The third reason is your motherboard or your memory, if it is your computer motherboard or memory caused by the failure to boot, you can teach your computer to boot to see if your memory module is Bao Dong or whether there is dust to check your hard disk, or whether there is a problem with the motherboard.

Nowadays, Xu people have to use a lot of computers for office or leisure and entertainment every day, but in the process of using computers, it is also accompanied by computer failures, and computer black screen is the problem that people often encounter computer failures, so what are the reasons for computer black screen? The following is the knowledge I bring to you about the reasons for the black screen of the computer preparation, welcome to read.

Reason 1 for the black screen of the computer: software problems

1. There is a problem with the operating system settings, such as screensaver and power management

Solution: Open the system settings and reset the screensaver time of your computer.

2. The black screen phenomenon caused by the incompatibility of the graphics card driver

Workaround: Reinstall the driver and debug the system to solve the problem.

3. The phenomenon of black screen of the computer caused by viruses

Solution: After the computer is turned on, the screen will go black when you enter the desktop, then it is possible that the system has been invaded by a virus. The system needs to be reinstalled to resolve.

4. The conflict between the software causes a black screen

Solution: Because the computer has a very light and large expansion performance, resulting in many kinds of various software launched on the PC computer, if these conflicting software are installed together, there may be a black screen of death due to address call conflicts, just uninstall the software to solve.

Reason 2 for the black screen of the computer: hardware problems

1. The power cord plug is loose or the VGA rescue contact is poor

Solution: If the computer boots up and the black screen does not respond, then the first thing to check is the power cord and VGA interface of the computer to see if there is a problem with the line, if there is no problem, it is the hardware failure.

2. There is a problem with heat dissipation

Solution: If the user's computer is after the computer is turned on, running for a period of time when the computer has a black screen, it is likely that there is a problem with the heat dissipation of the computer, usually the computer CPU temperature is 30 ° to 50 °, more than 50 degrees will have a pit that causes the computer to black screen or restart, we only need to apply heat dissipation paste or replace the radiator.

3. Problems with the graphics card or monitor

Solution: If there is a problem with the parts, it will cause a black screen on the computer, and the user only needs to change a graphics card or monitor to see if there will be a black screen first, and if there is still a black screen, replace another part to try.

4. Poor memory contact

Solution: Poor memory contact will cause a black screen phenomenon when the computer is turned on, at this time, the user only needs to unplug the memory card, and then clean the card slot and gold finger of the memory card, and then re-install the memory card back correctly.

If your computer has a black screen, you can analyze it from the software and hardware aspects to see if the computer is malfunctioning.