This is the second time i've had this in so many weeks. Very strange.
I was hoping it might just be the boot sector.

PC wont boot, and on booting to ubcd or pm8 it shows disk not formatted. On the first occasion the client didn't care as he had a full backup and I reformatted etc, but this time the disk is/was packed with years of family pics etc and not backed up.
Before I format i need to try a recovery program.
I've Googled and there seem to be a plethora of progs. Does anyone have any particular favourite, free preferably that i can download?