Like I say, I can't run the recovery disc, because I asks for a password I no longer have (I don't even remember setting a password! It would have been set about seven or eight years ago, whatver it is). It gives me three chances to enter the correct password, and that's it.
Hirens boot CD, eh? Is it fairly easy to use? I'm really getting out of my depth here. Then again, I am learning quite a bit of PC stuff that I wouldn't normally have encountered, so I'll think of this as an educational exercise.