When I press the power button of my PC, it sometimes powers on.
Most of the time, it gives a short flash and nothing else.
Then I have to either press and hold the power button for about 20 seconds and try again or switch of the power supply and then try again after some time.
These is what I tried and doesn't work:
- Tried different Power cords.
- Tried different Wall sockets.
- Tried replacing CMOS cell.
These didn't work.
I tried unplugging the 4 pin connector from the PSU to motherboard and now it starts instantly every time.
But I see nothing on screen. Maybe the CPU isn't running now.
I tried powering it up having the case in an angle. Sometimes at some angles it works.
So I can't figure out what exactly the problem is. I doubt the CPU and the PSU.
Can you suggest what could be the possible cause?
Best Answer
Possible Solutions:
Check if the power switch wires are properly connected to the motherboard in the correct pins. They should be labeled.
Remove the CPU and try starting up the computer. Most motherboards will give you an error. If you successfully see this error then you can assume that the CPU is causing problems.
Some motherboards have a built in power and reset switch. If yours does, try using those instead.
When you disconnect the 4 pins from the motherboard, if you have a dedicated graphics card then try to connect the video cable to your onboard graphics in an attempt to get something to display rather than the graphics card.