Hey, there is a problem with the account creation file in Windows 7. The first account made (Administrator) Or the profile you created works completely fine right? When you try create another account it works, but you have the following errors. (Cannot resize window, Cannot Close Window, Cannot Enlarge window) -- The problem is in the AppData in the Users Folder. (This folder is hidden) -- Quick solution, copy the first user you created (their AppData) Folder into the users you want to able to fix those problems. there will be a few things you wont be able to copy, but just skip those. Once you've done copying it, you are all ready to go.
There are other problems with Windows 7, but i'm sure it'll be easy enough to fix. Took me 2 minutes to figure out how to fix the resizing. Anyway, enjoy.