I'm wondering if I may get some help from someone more knowledgeable than myself about computers.... I have built one quite some time ago (5 years) so it is old.
When I booted it up a few weeks ago, it kept giving the "no video input" msg on screen. I have rebooted it and it then everything worked. Then over a few weeks, I would get this error more and more frequently, though after restarting a few times it would work.
Then one day it never turned on anymore. I connected my monitor to another PC and it works fine. I replaced my video card thinking it had burned out but it still didn't work. I have tried replacing the battery on the motherboard and still nothing. All the fans turn on including the CPU fan..... I'm not sure whats going on?
I had checked the monitor cable by connecting it to other monitors/PC's and it works fine, so it is not the cable's fault.
If it isn't the monitor/cable/video card..... what else other than the motherboard could it be? Is there a way to test if it's the motherboards fault, or is the CPU fan turning on indicative that the motherboard is fine?