Mr Draper! I'm a mac bod, so the only booting i'd know about would be of the foot variety over the wall through frustration. After an hour it shows on the screen "Windows can't be started because the following is missing or damaged : <windows root>\system32\ha!.d11. As far as I'm aware this machine was last used 5 years ago and since then has sat unused and undisturbed so how the software is damaged/altered is a mystery to me.
SHJ