Sorry for the delay, i had gone to bed
After i wrote the reply about the Mouse working in the Bios screen and system recovery options screen i just left it sitting there, but switched off when i went to bed.
I just switched on, and was going to try the Fn + F9 that you suggested again AND
you will not believe this, but the Mouse is working, yet i had touched nothing
Well, all i can say is Thanks for your time & help.....it would have been nice to know what had caused it