Just to post that I too have had problems with this model switching itself off without warning. The record was 20 attempts to power it up and after that it switched itself off 5 or 6 time while using it. It now powers on but then the dreaded BSOD appears and can't get beyond that. We've given up is disgust and purchased a new PC which isn't Fujitsu! Luckily I did regular backups and can retrieve my documents and pictures from the backups to restore on the new PC.