I installed ubuntu 11.10 using wubi on an old HP Compaq nx7400 laptop. It has worked fine until recently, but now whenever I try to boot it freezes. I first get the usual boot screen, with the colored progress dots, but then it switches to a textual mode and stops... the curser just blinks and blinks, nothing ever happens. I am wondering what the problem is and how I can fix it.
Note: I recently tried upgrading to 12.04 beta, but there was not enough space left on my hard drive.