Windows 7 - Can't change my theme.

Well, some guy at work ****ed with my computer while I wasn't near it(what a douche bag), and apparently he edited the group policy settings so that I couldn't change my desktop background. After finally figuring THAT part out, I went in to the group policy editor and made everything that he 'enabled' back to 'not configured'. Thinking this had solved the problem, I went and found another desktop image, set it, restarted my computer..lo and behold, the same damn image that he had gotten stuck on there..was there again. So..any help would be greatly appreciated, as I am out of ideas, and so is he.

Start by telling us about your system. Fill out your System Specs and what Version of Windows 7. Our we can just quess

Windows 7 professional 64x bit, 2 GB of ram, 160 GB HDD

Just some advice, goto your profile and fill in your actual system specs ( mobo, vid card, cpu, ram, os, hd, ram, etc )

that will further allow us to help you, I'm not doing this to be an asshole just wanna be able to help you fully solve your problem!

Thanks,
Kukag

Hello Casanova,

You might double check the Step Two options in both METHODS (Group Policy and Registry) in the tutorial below to see if this may be the cause.

Desktop Background Wallpaper - Prevent Change - Vista Forums

If not, then you can try a system restore using a restore point dated before he touched your computer to see if it may be able to fix this for you.