reach the BIOS??? At first my computer would start for 10 seconds, then shut down for 5 seconds, and then start up for good an run windows consistently for hours.Now it starts up but shuts down before I can even look into the bios to see whats wrong with it.I have a 600 watt power supply and I assume that is plenty for two 500 Gb Hard Drives, 3 CD Drives, 2 Gig Ram, and a Quad core. Maybe I was wrong but Ive read reviews on this Rosewill PSU and most of them have even more than I hooked up to it. Many people have suggested: Reset CMOS batteryRe-Install Windows XPCheck RAM and remove one of themCHeck CPU temp for overheatingTurn off some settings in the BIOSAre any of these likely? ANything to do with the BIOS is difficult because now the things shuts off after like 20-30 seconds if im lucky ... I need help or the most liable answer. Thanks again!