Guild Wars 2

Hello guys! I have this problem since few days. When i play my screen turns into green (sometimes brown,blue) lines. Re-installed my WS, new drivers, cleaned the pc parts from the dust (video card, ram etc) and it’s still the same. Is this a video card problem or more likely RAM? When i run FurMark about a min or two pass and it crashes again. The only solution after the crash is restart. Any ideas what this could be?

Sounds like your video card is defective.