I have installed Ubuntu 12.10 on my PC alongside Windows 7 option. All seemed to be working fine. I installed Chrome and FileZilla, installed updates which had downloaded during the install, rebooted, and I get the usual boot options (Launch Ubuntu, Ubuntu with Linux, Memory test, and boot Windows 7 on SDB1). Booting into Windows 7 is fine. When I select 'Launch Ubuntu' it proceeds to the Unity Greeter.
However, when I enter my credentials, I then have display issues. The screen becomes smaller, leaving a black border around the screen, almost as if I'm using a lower resolution than my monitor allows, shows my desktop wallpaper, and does nothing. Pressing Ctrl + Alt + Del allows me to log off which I can then reboot from the top right, but that is all.
Intel Core 2 Duo 2.7Ghz - 4GB RAM - nVidia GeForce GT 220 - 1TB WD Hard Drive(7200rpm)
These specs ran Windows 7 Ultimate fine, with all the Aero graphics, so that surely cannot be the issue.