I have this problem. The other days i had some problem with my Ubuntu installation, problems with grub2 and so on. Now the problem i have is: on the boot screen appears windows and ubuntu, but ubuntu is not working because i uninstall it as in a tutorial found here. You know how can I do that? And i have another problem i start to install wubi inside Windows, it's shows installing, show the reboot, i reboot, and after reboot nothing happens? Any ideas how can i make it working? I mean i don't know if in 12.04 it should still do something, but it doesn't appear on the bootscreen as well. On the boot screen i have Windows and the previously uninstalled Ubuntu.
Thanks a lot!