Cleaned my rig yesterday, put everything back together and now it's not working. What has me mystified is the manner in which it isn't working. When you hit the power button it will power on, as in the lights will come on and all of the fans will spin up then after a brief period, anywhere from less than a second to almost a full minute in one case, it will power itself off again and not turn back on till you unplug the PSU and let it drain. This had me thinking that the PSU is bad. However even when the PSU stays on long enough the Mobo makes no attempt to post at all. The debug LED doesn't light up, and doing thing like removing the RAm and starting it cause no post codes. I have double, triple and quadruple check that everything is hooked up correctly and it is good. So does anyone have any ideas?