The reason that computer monitor is easy to black screen

Small series to introduce you to computer monitors easy black screen reasons:

A black screen on a computer monitor is a problem that users often encounter when using a computer. In fact, as long as the computer hardware in the motherboard, CPU, memory, display cards and other major parts have a certain understanding of the failure of the components of the simple fault can be completely removed from their own hands. In this case, you can follow the following maintenance steps and methods for analysis and simple maintenance:

First, check the host power supply is working

Does the power supply fan rotate? Hand to the main chassis of the back of the switch power supply outlet, feel the wind blowing out the normal power supply, no wind is a power failure; host power switch on the instant keyboard three lights (NumLock, CapsLock, scrolllock) whether shiny? Yes, The power supply is normal, the power supply light on the host panel, the hard drive light is on. Because the power supply is not normal or the motherboard is not powered on, the monitor does not receive a data signal and is clearly not displayed.

Second, check whether the monitor power

is the power switch on the monitor turned on? Is the monitor's power led lit? is the display's brightness potentiometer closed to the minimum? is the monitor's high-voltage circuit normal? Move to the monitor screen with your hands whether there is a "hissing" sound, the back of the hand hair is erected?

Third, check the display card and monitor signal line contact is good

Can unplug the plug to check, D-shaped socket is bent, broken needle, there is a lot of dirt, this is a lot of users often encounter problems. In connection with the D-shaped socket, due to uneven force, or forget to tighten the socket fixing screws, so that the socket contact is bad, or due to improper installation method of the Ambassador D-shaped socket pin or bent, so that contact bad.

Open the chassis check that the display card is properly installed and that the motherboard slot is in good contact

Does the display card or slot have too much dust to be used for too long, resulting in poor contact? Does the chip on the card display a burnt or cracked mark? When a black screen is caused by a display card, the computer post will have a short, four-length beep beep. When installing the display card, you should hold the upper part of the display card by hand and insert evenly into the groove, so that the fixed screw mouth of the display card matches the screw mouth of the main engine box, do not insert without forcibly fixing, lest cause the graphics card distortion. If you confirm the installation is correct, you can remove the display card by rubbing the pins with an alcohol sponge or by switching to a slot for installation. If not, change a good video card to try it.

Check other board card (including sound card, decompression card, video capture card) and the motherboard slot contact is good

Pay attention to check the hard drive data cable, power cord connection is correct? Replace other card slots and clean pins. This is a point that many people tend to overlook easily. It is generally believed that the computer black screen is part of the problem of the monitor, unrelated to other devices. In fact, because the sound card and other equipment installation is not correct, resulting in the system initialization difficult to complete, especially the hard disk data line, power line plug wrong, but also easy to cause the failure of the display.

Six, check the memory of the board and the contact is good, the quality of the memory bar is perfect

Reseat the memory strips once, or replace the new memory strips. If there is a problem with the memory bar, the computer will start with a continuous tone "beep" sound.

Seven, check the CPU and motherboard contact is good

Due to moving or other factors, so that the CPU and slot 1 socket or socket 7 socket bad contact. Use your hand to click the CPU or remove the CPU reinstall. As the CPU is the main engine of the heat, socket type 7 may cause the motherboard to bend, deformation, can be in the CPU socket motherboard Bottom cushion flat motherboard.

Eight, check the motherboard bus frequency, system frequency, DIMM jumpers are correct

Control the motherboard manual, check each jumper, order for "system frequency jumper--cpu frequency jumper--dimm", set CPU voltage jumper should be careful, should not set too high. This step is useful for some assemblers or users who like to overclocking.

Nine, check parameter settings

Check that the CMOS parameter settings are correct and that the system software is set correctly. Check that the video card is in good compatibility with the motherboard. It's best to check the data for setting up.

Check whether the environmental factors are normal.

Whether the voltage is not stable, or too high temperature, in addition to the above steps to check, can also be based on the work of the computer to quickly locate, such as in the host power, you can hear the computer self-test completed, if the hard drive lights flashing, should be in the second step to the fourth step check.

The above inspection method is based on the monitor itself without electrical failure, that is, the power led on the monitor does not light up when the host power is turned on. If the above steps are checked one by one, the monitor is still not displayed, it is likely to be a circuit failure, should be asked to repair professional.

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