Open the Nvidia control panel
go to Help --> System Information
do you see your card there?
What driver version?
Yes, I see my card.
Driver version: 265.89
Isnt the newest driver like 306.xx or something like that?
Possibly. This is the latest from Toshiba. I find that the drivers from the hardware manufacturers can be more reliable (learned that lesson the hard way with Intel graphics drivers on a Dell).
Anyway, I tried the clean re-install option and it seems to be working now.
Thanks to all who took an interest in helping.