i think file vault is locking me out. But there is no place to enter FV PWRs. After entering MacBook PW it spins a full minute and shuts down. Tried safe mode but perhaps incorrectly. Guest user opens but Safari is too degraded to run you tube. It's a 2006 MacBook with about the newest OS it will accept. Mt Lion I think. It has not opened since a local shop copied my files to a newer MacBook.