Graphics card problem

I have an early 2015 MacBook Retina and I'm experiencing a big problem.

The other day, it crashed completely with black and white flickering lines all over the screen (see picture).

I can't escape out of it and the only thing to do is to turn it off an on again. If I leave it a while it will reboot, but crashes again after a few minutes.

I think this may be a graphics card problem. Does anybody know if this is fixable or is the graphics card integrated making a repair economically unviable.

I appreciate any help with this!

Will