EDIT: Thanks for all your help, it was really appreciated! Although I didn't fix Windows, I was able to copy the very few files I'd like to save from Win 7 to Ubuntu, and will probably start using Ubuntu as my main OS (I really like it!). Thanks again!
Yesterday I shrank the largest partition of my hard drive in order to make room for Ubuntu. Everything turned out well... for Ubuntu. Now sda2 has an error beside it in gparted (see screenshot) and when I try to boot windows instead of Ubuntu from sda1 it returns me to the boot menu screen of Ubuntu. If I try to boot windows from sda2 it tells me to insert a Win7 installation disk for repair (which I do not have since it came preinstalled). I don't really have any important information on this partition (it's all either in Google Drive, or backed up in usbs)... but I would like to use windows from time to time.
I am wondering if there is any way to fix sda2 without an installation disk? I cannot interact with the partition at all as all it gives me is errors, unless I try booting windows from it (then it gives me the "Insert Installation Disk" screen).
Screenshot of error via gparted:
Screenshot from 2014-01-11 17:30:03.jpg
Additional error when in file browser (my C: drive displays as 147GB volume now...):
Screenshot from 2014-01-11 17:46:32.jpg