Guild Wars 2

Buy a reference 7970 and overclock the hell out of it. I got my MSI R7970 for $350, clocked it up to 1250mhz stable and it eats games

Basically ive not had time to play for the past week or so and today i logged in. Game updated with the newest patch and now it wont load at all. All that happens is the screen flickers black then back to the desktop 6 times or so then stays on the desktop.

System is clear of all malware and there is no issue with any other games. I use no firewalls or antivirus on the pc. Only firewall is the one on the router. Any ideas?

Im running an i5 3570k @4.8ghz
Asus maximus Formula V mobo
MSI R7970 3gb @ 1250mhz
8GB G.Skill Trident X 2400mhz ddr3