Guild Wars 2

I just updated GW 2 tonight alongside with my ATI RADEON drivers.
The game won’t start after launcher: the screen flickers 7-8 times very fast and thats it!
Any help?

System specs are:
CPU: i7-4790k
RAM: 16 gb 2400mhz DDR3
GPU: Radeon HD 7770 vapor x (1 gb gddr5 128 bits)
GPU drivers (just updated) : v 16.3.2

Fixed this crap , was due to Radeon Drivers! Reverted back to v 15!
Can be closed!