Okay, here's the issue. I have a case that when it powers up the lights and fans spin for a fraction of second (if you can even call that spinning) and then nothing. It's not the PSU, I've tried different PSUs from working computers, 4 in all, and I duplicate the same thing everytime. It's not the motherboard, I've actually replaced the motherboard and I get the exact same issue as I did with the old one. It's not the wiring to the switch, if I try and trip the power with something metal instead of using the switch the same thing happens. I've tried unplugging the HD and booting, same problem, unplugging the disc drive and booting, same problem, unplugging the video card and booting, same problem, removing the ram and booting, same problem. I haven't tried it with no CPU yet, because I figured even if that was shot I should at least get to POST, but considering by this point I am clueless I'll give it a go when I'm done posting. So yes, I have absolutely run out of ideas of what could be wrong, if anyone has the smallest idea please let me know. The sooner the better, and thank you in advance for your help.