OCModShop posted a guide about fixing your Hard Drive when Vista won't boot

Hard drives go wonky. It has happened to the best of us. You boot your shiny new Vista computer, and you get hard drive errors along with a message that says "Cannot find STUPIDDRIVER.SYS". Windows will not boot, and you're in a panic. You cannot even get into Safe Mode to run a disk scan. You really don't want to have to reinstall the operating system. So, what do you do?

Fortunately you can fix your Vista system and run a disk scan with nothing more than Vista's Boot DVD.

How to fix your Hard Drive when Vista Won't Boot