fan not recognised, ouch. bios problem ?
possibly internals of fan where the three wire isn't three wiring anymore (speed sensor)

if bios won't see the drive, back to drive failure
backup asap and then fingers crossed

me mum uses partition magic, she can re-size and change windows partitions
I've used r-studio to recover data from a drive.
if you fdisk and delete all partitions, r-studio can scan the drive and see all the directory and file data that hasn't been actually physically overwritten and make a very good guess as to what goes where
again, if the drive is failing, it won't find much before the drive dies.

sounds like a lovely recovery project, bring it around to myhouse in Sydney and I'll look