SATA Hard Drive 250GB purchased on 23 July and already down. It is frankly .Inadmissible !! It worked very well with Windows 7 during the 30 day warranty and has deteriorated progressively over time. Today it is completely "HS" because several clusters are damaged and unrecoverable. I tried everything and nothing done there .. it must now change it and redo the whole installation program and drivers Either 4 to 5 hours of tedious work .. Western Digital is not recommended ..