Greetings, I am wondering if any of you guys can help me out of this little problem. I was performing some maintenance on my brothers laptop a few days ago. He had been having some issues with huge memory dumps being created and so I went in to his advanced system settings and disabled the feature to create the dumps. For some reason while I was in there I decided to click that Environment Variables button, I selected all the variables in there and clicked 'Delete'. <<< STUPID! Next day he contacted me to say that all hell had shook loose on his machine. Needless to say a giant finger came pointing at me as the guilty culprit. He stated that he: Can't enable volume, just get error code:0x8000FFFF Can't run system restore, just get an error message. Can't run system maintenence, just get an error code. Can't uninstall any programs. Can't change any windows settings, just get an error message. My first thought was to get him in to safe mode and do a system repair or to restore the old variables. Unfortunately when he tries to reboot with the F8 key nothing happens!? The worst part of this is he lives 90 miles away so I am going to have to talk him through what to do. If anyone can offer me some advice on restoring the original vars it would be most appreciated. Thanks for listening.