|Yes. Try clearing out your temp folders. You may have to uncheck "Do not show hidden files, folders or drives" and "hide extensions for know file types" before going to the first temp folder below. You can do that by clicking on my computer\ organize\ folders and search options\ view tab.|
C\Users\ Admin's Name\ AppData\Temp
Then type this in the search under start.
AVG, click on "see more results" and then click on "Computer" to let it search your entire drive. Anything AVG related delete it.
Now try to reinstall it again.
Iron Sharpens Iron.