Cards might be broken

[Shimi269]

Still under the one year warrenty I think, have SLI 570s, no overclock, sometimes i get artifacts on my screen and games and my drivers start breaking, after alot of restarts and and crying it starts working again for about a month or two then just hit backs again, I do not know what the problem is, no overclocks done, nothing modified, but I get these massive issues, I update the cards and do fresh installs and what not to make sure it is not the drivers and the problems are still there, which have made me come to the conclusion that the cards are broken as there is nothing else that could be causing the problems on a 11 month PC

[Shimi269]

Ran the EVGA OC Scanner got, 3429 artifacts on GPU1 and 383 on GPU2, both ran for 2 minutes, so I think is one first card that is broken