Laptop won't boot problem!

[Sieglinde]

Basically my laptop was running slow so I restarted it and when it's usual "Toshiba blah blah" screen popped up, it said preparing to fix laptop. A blue screen appeared and said Hal was corrupted or missing. I'm not sure what the hell has happened but I look on set up and the hard drive was still appearing so I'm not sure whether that's the problem or not. Either way, my laptop won't boot up and just turns itself off after a minute of showing the error message.
What do I do? What's wrong with it D: ?

[mrwoooooooo]

windows corrupt

[-Nick]

Blue Screen = Blue screen of death you might have a virus which has killed your software or your computer has died of age meaning you've used it alot

[Drunq]

Windows corruption