Hi, I've just built my own PC for the first time. It has a SATA HDD (Western Digital WD400), a DVD/RW (Pioneer DVR-109) and a DVD-ROM (Pioneer DVD-120RD). My motherboard is Asus P5GD2 Premium. The HDD is connected via a SATA cable in the SATA1 connector in the motherboard, and the optical drives are connected via an Ultra ATA ribbon cable in the Primary IDE RAID connector. The jumpers are currently set as thus: HDD - cable select, DVD-ROM - slave, DVD/RW - master; although I have already tried swapping them around. When I turn the computer on, it does an IDE scan and detects the DVD/RW and DVD-ROM as being 'Drive 0' and 'Drive 1' respectively. It doesn't show the HDD. Then when I go into the BIOS, only the HDD appears, as 'Third Master IDE'. Because it doesn't detect the optical drives, I can't install WinXP. What's going on?!