After cleaning my heatsink and putting everything back in place, I noticed that my computer refused to turn on no matter how I had it set. The heatsink is sitting perfectly and the main power pin seems to be sitting fine, but one of the two sets of pins where the power button goes seems to be bent.
On top of that, the motherboard is old and I'm just not really sure where to go from here. I think either something isn't plugged in right or the power button pins are just plain broken. But I'm not 100% sure and I'd like some advice where to go from here. I will provide pictures if needed.
More about :computer refuses turn mobo issue diagnose
try unplugging the power supply then use the green wire trick to see if the unit turns on. if it turns on plug the cables back in. take the gpu out see if there a cmos beep code failure. if no post take the ram out. look on the mb for any dead shorts or caps that are leaking. try clearing the cmos or replace the cmos battery.