I have a feeling this is not going to be good but... My computer no longer POSTs. Power is being fed to the motherboard (onboard LED is on). However, I cannot get the computer to boot. A week or two ago, I had trouble booting when after shutting the computer down. I would wait 5-10 minutes, hit the power button and everything would work fine as long as I did not shut it down. I recently moved my computer to another room, requiring that I power down obviously. Worked fine in the other room, brought it back to the first room and it would no longer POST. I've tried unplugging everything but the barebones essentials (motherboard, and one HDD) figuring it was a lack of power. I've tried booting with only the motherboard plugged in, no luck. I recently (about a month and a half ago) bought a new HDD (the seagate listed below) and installed a copy of XP Pro I bought from our university ($8 total for XP pro and Office 2003!). I updated all of my drivers, updated my BIOS, my chipset, etc. and everything worked fine. The aforementioned problem did not occur until about three weeks later. The only clue I have to this problem is this, after about 10-15 minutes, the computer on LED flashes and my CPU fan moves with it in unison. It blinks in a sequence of 1-1-3-17-1. After about a minute, it repeats. Normally BIOS POST codes come in the form of beeps for most computers, right? I figure this is probably the last words of a dying computer. I am attempting to obtain another power supply figuring that it may be the source of the problem, but I don't want to burn $30-40 on a decent power supply only to find out my CPU or Mobo is fried. Any help would be very much appreciated. Brand: VPR Matrix Motherboard: Intel D845PEBT2 BIOS: Not sure, Intel gives it as AMI/Intel CPU: P4, 2.667 Ghz RAM: 2x512 DDR (mix of two brands, PNY and most likely some generic OEM) HDD: 160GB Seagate Barracuda, 80GB WD Optical drives: DVD+/-RW TDK 880n, CDRW (can't remember brand) Video: MSI nVidia GeForce FX 5900 XT Sound: Creative Audigy 2 ZS Platinum TV Card: Hauppage WinTV Go Plus PSU: 350W can't think of anything else, but I can figure it out if needed.