Does anyone have any suggestions as to why my computer won't start? I removed my motherboard in order to punch some holes in the case, then replaced it, and now the computer won't start up at all - that is, nothing happens when I press the power button. I know the problem is not the power supply as the network card link light comes on (and I already tried another power supply). I have checked the leads that come from the power button to the motherboard and they are still in place. Similarly with all of the power cables. Could I have somehow fried the motherboard, or is there something else I should try? Thanks in advance.