sorry, but I have the same problem with my laptop - I have updated my GeForce GTX 670M - reinstalled pe 12 ( my pe11 still works fine on the same laptop)
Deleted baddrivers.txt at least 20 times
Tried:
set the energy options to full power
* right-click on PE12-Icon
--> Compatibility Problems
no luck at all.
Problem is that I am on an offshore photographic job and I have to deliver a timelap made in my PE 12. I have already delivered one to days ago.
My PE12 has worked fine for the last 7 days, then suddenly after a restart it could not be started.