Windows 7 Previous Versions?

This really angers me. I have this dumb little problem where no matter what I do I get "There are no previous versions available" upon right clicking Restore pervious versions. I've went so far as to disable system restore with the exception of shadow copies. I've clicked create a restore point, then modified a file inside a folder, then clicked create a restore point again and then try to see if i can get a previous version and to no avail. This is a fresh install of windows 7. The thing is, i had to reinstall windows afew months ago and afterwards the feature worked flawlessly. Then i switched to OSX86 for a while and now i just recently reinstalled windows 7 again and even though i have a fresh install it still doesn't work. Please help!