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1. Black screen caused by computer host failure.
Faults can be divided into the following categories:
1.Faults caused by the host power supply.
Black screen failures caused by a damaged host power supply or poor host power quality are common. For example, when you add some new equipment, 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 alarm 12 consecutive sounds, replacing the high-power and high-quality power supply is the best solution to this kind of failure.
2.Faults caused by the quality of the accessories.
Poor quality or damage to computer accessories is the main cause of black screen failure of the monitor. For example, the motherboard (and the motherboard's BIOS), memory, graphics card.
Something that goes wrong and so on can definitely cause a black screen glitch. 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 main cause of black screen failure is the incorrect or loose connection between the memory, graphics card, etc., and the motherboard. In addition, if the graphics card is connected to the monitor, it can also cause this kind of failure, up to the AT power plug in incorrectly, or even if your hard disk or optical drive data cable is reversed, it may also cause a black screen failure.
4.Black screen glitch caused by overclocking.
Overclocking or overclocking parts that are not suitable for overclocking will not only cause black screen failures, but also damage to accessories in severe cases. In addition, excessive overclocking or poor heat dissipation after overclocking to parts that are not suitable for overclocking, or damage to the cooling fan during normal use, not rotating at all, etc., will cause the system to protect itself and crash with a black screen.
5.Black screen caused by other reasons.
Other things such as incorrect CMOS settings on the motherboard and incorrect BIOS jumpers on the motherboard can cause a black screen failure, in which case you can change the settings according to the motherboard instructions. In addition, software conflicts such as drivers.
Improper installation, improper DIY, such as BIOS flashing errors, incorrect power management settings, etc., may cause the appearance of black screen failures on the display.
2. The black screen failure caused by the failure of the display itself is mainly caused by the following reasons:
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 brigade power supply voltage is unstable, too high or too low may cause the display to not work.
2.The power switch circuit is damaged.
The failure of the display switch circuit is the main cause of the black screen failure of the display. Simple such as damage to the power switch or internal short circuit of the suspect nuclear agent; Common ones are switches.
damage or damage to its peripheral circuit components, etc.
3.Damage to the output circuit.
The failure of the output circuit or picture tube and its power supply circuit is also the main cause of the black screen failure of the display. In particular, the damage of the high-voltage pack, which is more common in some miscellaneous displays that have been used for many years or are of poor quality, resulting in no display black screen failure.
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Summary. 1.The computer can't be turned on, the black screen may be caused by a problem with the computer hardware, you can try to check whether there is a problem with the graphics card, memory, hard disk, power supply and other equipment, if there is a problem, you can contact the computer manufacturer for repair.
2.If the computer has been able to boot up, but there is a black screen in the middle, it may be due to a problem with the system, you can try to reinstall the system or update the graphics card driver to solve the problem.
What happens to the black screen in the middle of the boot when I bought a new computer.
1.The computer can't be turned on, the black screen may be caused by a problem with the computer hardware, you can try to check whether there is a problem with the graphics card, memory, hard disk, power supply and other equipment, if there is a problem, you can contact the computer manufacturer for repair. 2.
If the computer has been able to boot up, but there is a black screen in the middle, it may be due to a problem with the system, you can try to reinstall the system or update the graphics card driver to solve the problem.
How to reinstall the system.
The middle part of the computer screen is black, and the next two are normal.
Is there a problem with your monitor?
Can it be used normally.
It can be used normally, but there is a black piece in the middle of the screen, and the mouse or anything can be clicked.
That should be the problem with the display.
Can I only take it to repair? That's right.
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The graphics card is in bad contact or broken.