I have a HP Pavillion P6 desktop PC fails to boot. So I put a new power supply in it, but the same result. So I unplugged 4-pin auxiliary connector from the motherboard. Then I saw all the fans (CPU, 2nd fan under main PS, and main PS) rotating, but then still it did not go thru post-boot process. I heard the hard drive spinning but that is where it ends.
If I plug 4-pin auxiliary connector to the motherboard, then I can't even get this powered on at all (in other words, the computer is dead quiet), let alone post-boot process.
Should I throw this PC or is there something else that I can try at this point?