I used an external hard drive at a library to access my files a few weeks ago, using a separate username/password. I needed an administrator's permission, with his own password, to access the documents on the hard drive under my name. When I finally got the DC plug fixed for my Toshiba laptop yesterday, I discovered that some programs no longer worked, like IE and Chrome. System restore forced me to do a hard disk check first, which made things worse: Windows help, Microsoft Security Essentials, and the easy access keyboard didn't work anymore. When I finally ran system restore, it gave me an error message (0x80096001) about disabling my anti-virus program. But I can't access MSE to turn it off. I can't uninstall it either. The Microsoft fix-it programs I downloaded to my laptop via a flash drive won't run because of this same error message. I feel like my software is confused with different usernames having access to different things. I shouldn't have to use administrator privileges to gain permission to files and folders. This wasn't a problem before I used the external hard drive in a computer other than my Toshiba. What do I do? Factory reset isn't a recovery option, just windows installation discs. Help!