I put this PC together about a year ago, and today I have a problem. I switched it on this morning, and it comes on, looks like it's loading, then shuts off. I don't even think it got to the post a few times, other times it got close, but shut off before it got going. All the lights in the case shut down,everything goes off, like you've pulled the plug. After several of these 'random' cycles, it started up just fine. Wiggling wires and checking connections didn't seem to help. I'm sure this can't be good for the drives.
On a side note, the crucial ballistix tracer RAM listed below failed on me after about 4 months, so I replaced it with some OCZ reapers. It's been fine ever since then.
I thought I'd post here before I replace the PSU and find out that's not it. Thanks for your time. Here's the rig (sorry for the cut'n'paste)
PC Power & Cooling S75QB 750W ATX12V / EPS12V SLI NVIDIA SLI Certified (Dual 8800 GTX and below) CrossFire Ready 80 PLUS Certified Active PFC Power Supply - Retail
Antec Nine Hundred Black Steel ATX Mid Tower Computer Case - Retail
ASUS 20X DVD±R DVD Burner with LightScribe Black SATA Model DRW-2014L1T - Retail
Western Digital Raptor WD1500ADFD 150GB 10000 RPM SATA 1.5Gb/s Hard Drive - OEM
Western Digital Caviar SE16 WD7500AAKS 750GB 7200 RPM SATA 3.0Gb/s Hard Drive - OEM
Creative 70SB046A00000 7.1 Channels PCI Interface Sound Blaster X-Fi XtremeGamer Fatal1ty Professional Series - Retail
Tuniq Tower 120 Universal CPU Cooler 120mm Cooling Fan and Fan Controller/Heatsink - Retail
ZALMAN Zm-F2BL 92mm Blue LED Case Fan - Retail
CORSAIR CMXAF1 Fans - Retail
Thermalright HR-03 Plus VGA Cooler - Retail
Sorry, I've shuffled the list around to put the more relevant things at the top. Anyway, no, I've got the OS on the 150gb raptor drive. To be honest, since this is also the pc I work from, I've been afraid to shut it off now. Hard to diagnose like that, I know lol.
Put it this way, if it wasn't the PSU, what would you be looking at next? I've never seen a pc do this. It's like you're pulling the plug from the PSU, over and over again, but it's not a 'timed' sequence, sometimes it's a few seconds longer or shorter than the time before. Then, after nearly a dozen of these 'cycles', it started up and works fine, without me doing a thing to it.