How to repair No Display Desktop Computer?

No display computer can be categorized by different problems that occurs. First you need to check all the possibilities why computer having no display. This moment I will show you some of my experiences and how do I fixed it.



Power Supply

I have encountered on one of my costumers system unit that almost all of the primary peripherals are replaced but still the computer or PC is having No Display. But in the end when I replaced the Power Supply Unit (PSU), boom, it displays again. Not easy to believe but it's true.


Monitor

1. Is the monitor having power? If not, try to check the power cable or adapter.
2. If having power then check if the VGA or DVI cable is properly plugged. Sometimes there is a loss of connection.
3. Cable is good, now still no display. For this time, get a flashlight and take a light on the screen and look for any pictures or images on black area of the monitor.
4. If you can't see anything it means wee need to try replacing the monitor.
5. If still having no display proceed now to System Unit.

System Unit

1. Open the side cover of the casing and look for the Memory or RAM.
2. If you are using 2 RAM, take out the one and turn on the PC.
3. Still no display? Now take out the last RAM and put again the other one.
4. Again No Display, remove all the RAM, get an eraser and clean the gold section of the RAM.
3. Put again the memory on the slot and turn on the PC.
4. If still no Display, Replace the RAM with the new one.

You need also to check all the peripherals inside like Video Card, Processor, Hard Disk and Motherboard one by one.