I think I am on a losing battle here but.........I had my system in Raid0 and made some changes in the BIOS, the system reverted back to single hard drive status and would not boot. I tried all I could think of, but ended up re-installing windows. This time, however, instead of showin 1 hardrive of 500Gb it now only shows 1 hardrive of 250Gb. The system is still saying that its in RAID0 and on the RAID screen it states 2 x 250Gb drives. At no time did I format any of the drives so what I am hoping is that all my documents and music etc are still hiding somewhere............or am I hoping for too much?