even though i already install winxp. so after i isntalled winxp its restart then back into installation screen over again!. but when i take the cd out its ask me to insert it, if not its won't boot into windows using HD - my HD is detected though - its a seagate 80 gig my system is: Abit Av8 socket 939 AMD64 3400 1 gig dual ram. .. do u guys think its the motherboard fault? btw when i got it boot into windows (stil using the cd to boot) i would get blue sreen randomly , i also clear csom, took the batery out and cable out to clear/reset the mobo.