From reading a bit on the web, I think I might have a sasser worm.
When I tried to login, it briefly mention a file spelt like lsas.exe or something before it powered off. This is the problem I am having with my computer, it keeps turning itself off and its killing me! I can't see ANYTHING working. I first tried to go into the recovery console using my reboot CD but the laptop turned off...then I tried to completely reinstall windows and it did begin deleting files ready to reinstall it but then the laptop turned off.
So what I am stuck with now is a laptop which constantly turns itself off and which has vital windows files missing due to an interrupted re-installation (When i tried to login again it said it couldnt find some other vital file, no surprise as it had just been deleted). This all seems pretty hopeless eh?
edit-But now I am confused because maybe my computer was saying it couldn't find lsass.exe, the legitimate login file which makes sense considering I couldn't login. But why on earth would it keep powering off? Might this be a hardware problem?