@Sparky1, a utility from maxtor, Powermax. works from DOS and i don't like that type of applications, they are not fully compatible with SATA drives. @Marsden i don't want to hand down M$. i'm still looking for a 3rd party app @teigns, best defragmenter... ok, i'll take a look, but what i need it's "the best bad sectors scanner" @tomdekoning, note taked, i'll try to change my cable with the other one that comes with the mobo. @turbomcp, dunno if it's a hd problem but i want to erase posibilities of hangs also i'll check for winternals enterprise defrag but i need a 3rd party scandisk that's all (i think )