I can turn on my computer and sometimes it will boot up just fine. After a while of use, days or even a week, when I try to turn it on, it powers up, in that the fans spins up, the power indicator light at the front comes on (although orange, it is usually green), but it will not boot, the screen remains black and never comes on.
If I leave it for a couple days, and try it again, it comes back on, and the cycle starts over.
I have no parts for that computer that I can currently swap out to test. I have tried removing the RAM or using one stick to see if it would get any further in the process, but to no avail.
I suspect I may have a motherboard or power supply problem.
What could cause a situation like this and are there any solutions?
Edit: There is no beeping when it boots, the only thing that happens is the fans spin up and the power indicator comes on orange.