I did fresh install of 12.04 LTS on a wiped hard drive with no prior partitions. It installed successfully and restarted successfully to log in screen after 20 minutes of various white and black vertical stripes.
I logged in and got only a purple screen with nothing on it but the arrow cursor, which I could move about the screen with nothing happening from left or right click, or any keyboard keys and various combinations. I rebooted and came to same results. Any suggestions on how I could fix this?