Hello. This was my first and maybe my last build. I finally got this system to work fine. gforce 8800ultra, 4gig corsair ram. e6850 proc. It worked for a month more or less. Then it would post but wouldn't load windows. I couldn't hear my harddrive spinning. (wdraptor) so I unplugged the sata power lead from my other harddrive and plugged it into my raptor and boom comp booted right up. a week later same problem. I rma my power supply get a new one put it in system worked for a couple weeks. this time swapping power leads doesn't work. So I figure my hd is bad and therefore fried my power supplies(650w). I heard it takes a long time for wd to replace harddrives so i baught a brand new wdraptor 150g and a new and different ps (750w). I reload all my programs etc comp ran fine for a month and boom same problem. I had my wireless usb mouse, usb keyboard, usb PDA and IPOD all connected when i tried to start the system. It would post. then stay at the gigabyte screen where you can do bios set up etc. when i set up my bios the first time I enabled usb keyboard and mouse but it does not recognize those at this point for some reason. All fans spin. lights come on.