Hi experts, a friend of mine gave me an older desktop of his he wasn't using - an HP Pavillion a6400f Dual-Core E2200 Processor running Windows Vista. He hadn't used it in over a year he said, didn't have it plugged in or anything and just assumed it still worked. I got it back here, set it up, plugged it all in, powered it on, and no display on the monitor - not even that little colored "test-pattern" thing floating about. Just nothing at all.
I know the monitor works, as I've been using it to try and revive another computer from a previous question. The monitor is a Dell E177FPb that is no spring chicken itself.
Regarding the computer, fans are spinning and the illuminated power button is on... but I see no other lights or LED's on when I look at the motherboard and the rest of the innards - maybe this is normal for this model, I don't know...
Can anyone offer any advice please?