Guild Wars 2

Just recently i have been getting frequent black screens when playing the game, this has never happened before and i dont know what i have done to cause this. Any suggestions?

There is not a lot of info here to base an answer on.

Do you have a crash report?
Have you changed anything before this started happening?

I have no crash report and i havent changed anything before it started happening

Still not a lot of info.

What are your specs?
What have you tried?
Are your drivers up to date?