For me problem with GW2 started in monday afair. I downloaded the latest update and after ~30 seconds of gameplay the screen went black for a 1-2 secs. After ~15 seconds it happend again and is still happening, today I played few hours without blackscreen but now they are back. I checked in Administrative Tools – Event Viewer what it is, and it says: “Display driver nvlddmkm stopped responding and has successfully recovered.”
It started on 306.02, but after downgrading to 304.79 nothing changed. I even checked if it appears in Skyrim and it doesn’t. What is more my temps are all fine, checked.
I play on Asus G53SW:
GeForce GTX460M
i7-2630QM
Windows 7 64-bit