I installed Maverick Meerkat when it came out alongside Windows 7, via the traditional installer (not Wubi). So everytime I restart/booted up my computer, I'd get a purple OS selection screen, to select between the Ubuntu version or Windows 7. However, after I updated it to Natty Narwhal, the GUI basically stopped working and I couldn't get it to work. Now when I log in I have 2 linux options (one with a recovery mode), one Windows 7 option, two options that say Wintestx86, and one that opens up previous versions of ubuntu (as a a separate folder).
My quesiton is, I really want to try ubuntu, so if I install the latest version, 12.04, using the WUBI installed, can I just overwrite the previously installed Ubuntu versions? I don't want to overwrite the windows partition/affect my windows data in any way possible. How do I go about doing this?