Since I did a fresh install of XP pro when booting up I will get "Bios not installed" as the Promise Ultra 66 loads up.. then I will get "Operating system not found" and I have to hit ctrl/alt/delete and then when it reboots all is fine and it loads into XP.. this happens frequently and only started after loading XP.. It doesn't happen all the time, probably 40% or the time.. Has anyone found a update for the Ultra 66 card's bios or drivers that could correct this problem?? I have a Dell XPS T 650r desktop with with 512mb of sdram and I also upgraded my PIII 650r to a 1000ghz chip a year ago, I did update the bios for my mother board (Intel Corp. A09) before installing the new 1gig chip.. I tried reseating the card, moved it to a different slot, cleaned all the connections and reseated them and still no luck..it is a hit and miss problem but it is annoying..