OK, got a new system driving me nuts. Maybe you guys can help. 1. Bought a new Shuttle XPC model SN27P2 barebones 2. New SATA 2 hard drive 3. New Sapphire Radeon X1600 Pro video card (PCI X16 format) 4. USB keyboard and mouse 5. 2GB DDR2 memory (yes, in pairs) Since its a SATA 2 motherboard I can't import my older IDE format hard drives, so its a blank slate. Can't use my old AGP video card for the same reason - no AGP slots on this mobo. Can't use my old PS2 style keyboard and mouse since the SN27P2 only uses USB ports. Got her all put together and . . . . nothing. All I'm getting on the monitor display is the flahsing "signal not detected" box. I've changed the video cables asa the first step of troubleshooting, but no luck. I've built computers before, but never had issues. Just built it and turned it on and it worked. Any guesses?