cpu does not boot fans and lights work but keyboard and mouse, monitor
does not i would hate to buy a new motherboard if that's not it. Is there any way to test.
That's usually a dead cpu. If the mobo is dead then you usually won't get fans or anything since it distrubtes the power. Only way to test it is to put in a new cpu or a new motherboard.
i bet its the cpu. once i came home in the morning, i always lock my computer when i leave it, and came back and couldnt move the mouse, so i rebooted, and it wouldnt boot. after troubleshooting lots of shit, i tried a diff cpu and it worked. cpu was fried or just died.