I was hoping someone can help me with this. I had trouble updating Windows XP. It keep giving me an access denied error message. I found out that I had user permission problems even when i booted in safe mode and used the admin account. So using a KB article I tried to reset the permission in regedit. About halfway through regedit stopped responding. I closed it out and rebooted my computer. After it rebooted the computer no longer recognized any programs but Internet Explorer. Every time i tried to open regedit it would ask me what program to open it with. All .exe files did the same. Some files when I right clicked didn't give me the option to open. I tried to restart the computer in safe mode by pressing F8, but it loaded up like normal. I tried to use Start>Run> msconfig but nothing happened. is there a way to force safe mode so I can run the last know good configuration? Or is there anything else besides reformatting the hard drive?