Ok ty,I also just asked on answers.microsoft.com,and poster says his GPU on laptop has CUDa support as my desktop does:
" I honestly have never seen or heard CUDA showing up on the Task Manager, It would be interesting to see if they could provide a screenshot of what they see in task Manager . . ."
If you would it might help, could you pls do a quick snapshot showing cuda as you say, might help him aid me in finding out what is going on.
Ty