Thanks to everyone........
...........for their help and advice which was most appreciated yeaterday during a spell that found me somewhat exhasperated at being unable to understand this damn thing I find myuself attached to for hour upon hour each day - thank you.
A very special thanks to Bruce who PM'd me and took me through a recovery system which has restored my PC back to where it once was. Cheers mate.
Buy it & Use it, then sell it and buy something bigger