When you press the on/off switch the PSU fan, case fan, HD, CD/DVD all run, but the blue LED light on
the o/o switch does not light up and no signal to the monitor. I've tried unplugging the power cord
and holding the o/o switch for 10-15 secs then re-plug the power cord, but what's strange is that with
the computer powered down when the cord is re-plugged the components come on without having to
press the o/o switch. I've tried unplugging & replugging internal components with no success. I'm thinking
it may be a software and not a hardware problem though. My recollection is this started happening after an
unsuccessful software installation reboot and I had to restart the computer via the o/o switch. It also
seems like it has gotten progressively worse. There was a time when it would try to boot and just hang
in the process. I would have to restart the computer multiple times and let it sit for 20 minutes to get
it to reach Windows. The last time I got it running, I just left it on, but it got turned off last night. Now I
can't get it to boot at all. Any ideas?