ASUS A 8v Deluxe XP pro O built this machine about a year ago for a friend, and it's always worked well. About 10 days ago it failed to boot from the onboard Promise controller. The drive is properly detected. I switched it to the IDE controller, and all was well. She really likes her Zip drive,which I disconnected to have a spare IDE slot, so I swapped out the ribbon cable and re-attached it to the Promise controller, and it booted fine. One day later it's failing to boot again (HD is still detected properly in the boot sequence). What's causing this? I don't know much about Promise controllers. Do you want to signoff PCBUILD or just change to Digest mode - visit our web site: http://freepctech.com/pcbuild.shtml