"Display driver stopped responding and has recovered"

Have you updated your graphics cards drivers?

No, I haven't updated my graphics cards drivers in a while.

Actually, try the drivers from here
http://www.tweakforce.com/

I find these custom drivers very stable

I'll probably give that a try tomorrow.

I get that too, but I just ignore it since it doesn't do anything after o-O

Having it happen randomly during training is very aggravating.

EDIT:
Problem solved. Thank you everyone for posting .