all of the sudden my pre wont recognize that i connected to a computer and just charges when i plug it in, it doesnt even give me the 3 option menu

the only thing i can think of that is causing this to happen in FileMgr Service that I installed today, it never worked and i cant seem to uninstall it...please anyone have any suggestions?

when i try to uninstall it says service probably not fully uninstalled, and when i try to reinstall it says probably not fully completed!