I spent at least 5 hours this weekend (24 Mars 2013) trying to restore Vista from a bad resume. The software has always been so bad, I had installed Ubuntu on that machine since the beginning. VISTA self-destroyed on my machine. Suicide. On the Acer there is a system restore function. It doesn’t work… So bye bye vista. I’m now giving all the place to Linux on that machine.
In the process of trying to repair I found a great set of tools called Hiren, see http://www.hiren.info/ If you need to save a broken PC, Hiren could be of a great help.