+ 0 Votes Reponse To Answer Charles Bundy 1 year ago Well you didn't say why you reformatted the hard drive. If it's bad that might be a source of instability. (e.g. suspend mode) I've seen machines freeze (not black screen) if there are problems with the gfx driver. I'm assuming you went to the Nvidia site to get the latest driver, if so did you reapply DirectX afterwards? Good luck!