Adding to EDDY1's response...
Please review the following, as to the correct procedure for creating a dual boot between Ubuntu and Windows 7 (it is somewhat different than a dual boot with XP, if that happened to have been your previous experience):
http://ubuntuguide.org/wiki/Ubuntu_T...ows_and_Ubuntu
I'm posting from a dual boot of Ubuntu 14.04 and Windows 7 Home Premium. I've set up several similar dual boots for friends and family, and have never run into a /tmp file issue.
IMO, starting from scratch again, might be the best choice to solve your problem, though someone else here on the forums might come along with a more direct solution to your problem...