There is a black screen computer monitor computer users often encounter problems. In fact, if a little on the computer hardware in the motherboard, CPU, memory, graphics card, and other major parts have a certain understanding, a simple non-damaged components can fail completely exclude their own hands. This happens, you can follow these steps and methods of maintenance and simple repair for analysis:
One. Check the main power is the power supply fan spins? Rear of the chassis by hand to move the host switching power supply outlet, feeling the wind out of the power supply is normal, no wind is a power failure; the main power switch on the keyboard the moment the three indicators (NumLock, CapsLock, ScrollLock) is shiny what? Is the power supply is normal; host-panel power light, HDD LED lit? Light, the power supply is normal. Because the power supply or motherboard is not unusual power, the display data signal is not received, apparently will not be displayed.
Two. Check if the monitor power monitor power switch is turned on? Monitor power light is lit? The brightness of the display is off to a minimum potentiometer? Display Inverter is normal? Moved by hand to the display screen is a "hissing" sound, back hairs are erected?
Three. Check the graphics card and the monitor signal line is a good check can be unplugged, D-shaped socket if there are bent, breakage, there is a lot of dirt, which many users often encounter problems. D-shaped socket in the connection, due to uneven force, or forget to tighten the jack screws, socket so bad, or because of improper installation of excessive force within the needle ambassador socket or D-shaped bend, resulting in poor contact and so on.
Four. Open the case check the card is correctly installed, the slot is good contact with the motherboard or graphics card slot is too long and the use of too much dust, as well as causing poor contact? Show whether the chip on the card burning, cracking marks? Graphics card lead by a black screen, the computer POST there will be a short four long "beeps" sound prompt. Install the display card, display card to hand hold the upper part, even forced into the slot, screw the graphics card port and port match the main chassis of the screw, do not forcibly insert fixed to avoid graphics distortion. If you confirm the correct installation, you can remove the graphics card swipe with alcohol cotton ball for a pin or socket installed. If not enough, try for a good graphics card.
V. Check the other boards (including sound, decompression card, video capture card) and the motherboard socket contact is good attention to check the hard drive data cable, power cable connection is correct? Replace other card slot, clean pin. That many people often easy to overlook. Generally believed that black is the display part of the problem computer, and other device-independent. In fact, due to sound and other equipment is not installed correctly, causing the system initialization difficult to complete, especially in hard drive data cable, power cord wrong, it is likely to cause no display of the fault.
Six. Check the memory is good contact with the motherboard, memory quality is excellent time to re-plug memory, or replacement of the memory. If memory problems, the computer starts, there will be continuous tones of "Didi" sound.
VII. Check the CPU and motherboard contacts are good for moving or other factors, so that the CPU socket with the Slot 1 or Socket 7 socket is bad. Hand click the CPU or remove the CPU re-install. As the host CPU is heating large, Socket 7 motherboard type may result in bending, deformation, in the bottom level up the CPU socket motherboard motherboard.
Eight. Check the motherboard's bus frequency, the system frequency, DIMM jumpers control the motherboard manual is correct, one by one check each jumper, in order for the "system frequency jumper - CPU frequency jumper - DIMM frequency jumper", set the CPU voltage jump line to be careful and should not be set too high. This step assembly machines or for some users like overclocking very useful.
IX. Check parameter settings check the CMOS parameter settings are correct, the system software settings are correct. Check the video card and motherboard compatibility is good. Best to check data set.
Ten. Check whether environmental factors are normal voltage instability, or high temperature, etc., in addition to the above steps to check, but also working conditions, according to the computer to quickly locate, such as Turn on the power, you can hear the computer self-completion, if the hard disk indicator is blinking, you should check in the second step to the fourth step.
The inspection method is based on the monitor itself has no electrical fault, that the host power on the monitor power light is off. If the above steps are checked one by one, the display still shows that it is likely part of circuit failure, should be invited to professional service.
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