What about computer black screen?

Computer black screen, commonly known as, the correct name should be shown without signal input, the host has power, but the monitor just opened, the power supply is green, will become orange, flash flash, there is no display on the monitor, or show no signal input.

　　Tools/raw Materials

Brush Eraser

Steps/Methods

First of all, according to the indicator is no signal input, it is possible that the signal line and the host, the display of bad contact led to no signal input, so to plug the signal line and the host, monitor the connector, the signal line connector ends of the screws tighten, so that its contact with the interface well.

If the first operation is not valid, it is necessary to use a screwdriver to open the chassis cover, the card on the motherboard, removed, the golden finger of the card, rub several times with the eraser, with the brush will be the motherboard on the interface, brush clean, because it is also possible because the graphics card contact bad, resulting in no signal input.

If the above operation, the monitor still prompts no signal input, it must be used to listen to, connect the computer, boot to listen to the host box there is no beep, a short alarm sound, if not, there may be the problem of memory, if the memory is not contacted well, the system does not go in, and how will come out of the signal, so to turn off the power, Unplug the power cord, and then the memory on both sides of the clip to dial out, the memory out, the same with rubber repeatedly rub gold fingers, with brush to clean the memory slot, and then plug in the memory, boot, the general problem can be solved.

If the above operations are invalid, you have to use the host diagnostics card, testing the motherboard is not a problem, the CPU is not running, there is a small number of reasons is the power supply problem, but the general problem, the first three steps can be resolved, really not, to find a computer repair it.

Open the chassis cover, the best, with high-power hair dryer, cold wind, dust the chassis clean, lest because of dust caused by short circuit or bad contact.

　　Attention matters

Use hand to pull out the memory, remember to use hands to touch the fields, the release of static electricity, or there may be static electricity to the small components of memory breakdown.