HD 520 Artifacting

[Murilo_A]

So, I bought this laptop that I'm using about 2 months ago. After about 1 month, I've noticed some strange artifacting, happened 2 or 3 times, 1 of them some webpages were very strange, with a lot of things not showing properly. The other 1 or 2, the whole screen suddenly became something strange, don't remember what it was. Today, I've got the same problem, happened 3 times, I was watching a YouTube video, suddenly, the screen went black, with some small colored squares. The screen would go back to normal after about 2 seconds, and I could notice frames droping. Drivers are up to date, Dell Diagnostics didn't found any problems. Complete specs are on the signature.