Guild Wars 2

update on myself, i switched all ghx settings to low or off and have been turning things on after a couple of hours 1 at a time. i began black screening again once i turned on Post processing, switched it back off again and no black screens for about 4 hours.
may be coincidence but worth a try

And another Voice.
spec I7 2600k
8gb ram
Nvidea 560 Ti

Turning on V-sync did seem to mean i got less crashes or driver resets (the black screen for a second)
does seem to be when im around water areas, such as the current story quest im doing ive had sever al driver resets and so far 4 crash to desktops.
Again PC nearly new and plays fine other high demand games.
Seem to be alot of people on here posting I7 processors possible to be the multi threading?
if so does anyone know how to switch it off or even better disable it for an individual program.