The manual says "Detect and Install all IDE Devices" but the BIOS screen that's going through the system checks is stuck on 'Detecting IDE Drives' and when I hold DELETE to try and enter the BIOS setup nothing happens. Any ideas what the problem might be?

I've checked the drive cable and power cables and changed the jumper from Master to Cable select and back again but nothing seems to work. Everything was fine with it yesterday....

clear your CMOS. the problem you described seems to be harmless, although, its tough to diagnose without some more info. reply back and i can help you further.