Alright I have a windows vista that has been running very smoothly without a single crash or freeze until now, which for whatever reason freezes my computer to the point that I must power everything off with the external button. When I try to do a system restore to a previous date, it says some files on C:\ are corrupted and asks to schedule a disk check. However, even when I can fit the normal shutdown in before a freeze, when I start up, the disk never gets checked and thus I cant fix any problems with my C drive and therefore I cannot do a system restore to about a week ago when it was working fine.