Lately I've had a very strange problem with my computer. When I turn it on, it'll usually boot normally except my monitor receives no signal. After I reboot, however, it'll usually begin receiving signal. I say usually because every once in a while, it doesn't boot at all (I don't hear the beep). I've searched for similar problems, but none of the other cases seem to "fix" themselves after a reboot. Everything works properly after my monitor receives signal, so I'd assume it's not a power supply or video card issue. Clearly some part of my PC is slowly dying because it doesn't even boot up sometimes, but I have no idea which part. It's not a dire emergency since currently I'm just suffering through a double boot-up, but I'd still like to figure this out.