My first build. XFX nForce 750 with AMD QC 9500, 8GB, dual 1TB Hitachi HDDs in RAID 1 array. Powered it up just fine, checked all the settings in BIOS, configured RAID, all without problems. Started installing Vista x64, and when it got to the point of asking for drivers for the RAID drives, screen went white for a second, then comp shut down. I am now unable to turn it on. I have the red LED's on the mobo on, but I can't get anything else to happen. rechecked all connections, found nothing wrong. HELP!