Graath, I am having the exact same problem and have a similar video card as you AMD Radeon HD 7700. I started playing Guild Wars 2 with the newest video drivers installed, 13.9. I would get the black screen, then blue screen of death, and I’d have to reboot. This was quite frequent. I then tried installing previous drivers:
13.5
13.11
12.10
It was the 12.10 that made is a little better. I wasn’t getting blue screens of death anymore and at least didn’t have to reboot. Blue screen by the way said that the video driver failed. What would happen now is black screen and GW2 locks up.. wait like 10-20 seconds, and it usually recovers..sometimes does it again right away. And sometimes it doesn’t recover but I can at least end-task it and restart GW2 without having to do a reboot.
I’ve combed the web for solutions and was astonished to see how many other people, with different hardware configurations, operating systems, etc. were having the same problem. It leads me to believe that there’s an issue with GW2 code and not individual hardware/software configurations.
So for me the most stable (if you can even call it that) drivers were the 12.10 for GW2. It sucks because I just got Battlefield 4, and to play it properly I need 13.9 drivers…. meaning I have to uninstall the 12.10 driver if I want to play BF4, reinstall them if I want to play GW2