Thanks for the help. It came to my knowledge that my HD (HD103UJ) has several problems do to incompatibility with some SATA controllers. It's strange is that it does not occur with windows XP. Is there any way to use the windows default driver only and impede windows to update them?
Edit: I am a little choked by this:http://www.laptop-junction.com/toast/content/unreliable-disk-samsung-spinpoint-f1-hd103uj-1-tb-tera-byte
Edit 2: I will later, on my job right now. But thank you for the help. Also on NVIDIA forums user with samsung HD where/are also reporting crashes and lockups. They recommended disabling NCQ. Will test and see if it helps. Thanks again!