Windows 7 shuts down when you click logoff
I have recently found an issue with the vast majority of computers on my network. When users (admin or standard user) click logoff on the start menu, the computer actually shuts down, as if you had clicked shutdown? Has anyone else had this problem, or know how to resolve it? We have around 400 computers on our network, and over half of them are affected. It is getting very annoying now, as we like to keep the PCs on during the day. Any help is appreciated.