I had a 2 year old PC motherboard fail so I moved it’s 200GB ATA WD HD with XP Pro (current w/SP2) to a new Dell Dimension XPS GEN4 3.4Ghz, 1GB RAM 533Mhz, 800FSB, HT with an existing 160GB SATA HD. I added the 200GB ATA HD to the single IDE controller and shared master/slave with a DVD RW. I booted from the 200GB HD in safe mode and added the Dell XPS drivers for the sound card, graphics card, gigabit ethernet controller, etc. and it seems to work fine in safe mode. When I boot in normal mode it gets to the login for XP Pro and then the screen goes black and the system hangs with the HD access LED constantly on. The only thing it will accept at that point is a hard power down. I think it is a driver problem, but I am not sure how to identify and fix it. I looked at the Dell System Resource Information at addresses and IRQs, but there doesn’t seem to be any obvious conflicts.