I downloaded the repair disk, followed all of the steps and still nothing happens. I have windows vista and the windows will not start successfully with the safe mode options and it will not let me select either option. I made the CDROM DRIVE 1st on boot up but once I put the DVD(what i burned it on) in the screen just goes black, and stays that way for a while then finally the windows will not start sucessfully comes back up?? No reinstall CD so I really need some help here