How come my computer is telling me that I have Sim 3 installed when I ran the uninstaller?

by on February 18, 2013

Q: I am trying to uninstall the sims 3 and all its expansions. i have already deleted it with the uninstaller, but now when i try reinstall it, it says this game is a higher version.
When i go into control panel-uninstall a program,
Programs and Features
The sims 3 and all the expansions are listed but it says i do not have sufficient access to uninstall this. please contact system admin. i am the admin.

how do i make it so i can uninstall them?