I just put together a new system with the following Shuttle SP35P2 Core 2 duo E6600 ASUS 8600GT 512MB 2GB Corsair RAM 500GB sata seagate HDD ASUS IDE dvd drive At first it started fine, I was able to install windows and everything. But now when I turn it on the hard drive activity light is only on for an instant then nothing happens, the fans are going but nothing on the screen, after restarting/swearing for 5 or so minutes it will turn on and everything is completely fine, like it's mocking me. If I clear the cmos (which this case has a handy button at the back for) it will turn on fine, but only once. It also works sometimes if I open up the case and unplug/replug stuff. Once the computer is on, it works fine, and sometimes restarting works, but if I turn it off overnight, it won't turn back on without a cleared cmos. Am I missing something obvious?