Hmmm, could it be temperature related?
Or graphics related. I've not seen this issue, but I had a bad one where random artifacts would be displaying on the screen, while testing to see if a laptop repair company's repair actually worked. Netherless to say that it didn't, so its gone back for another round on their workbench.
It maybe a VRAM failure or a GPU failure. Both in a new product, highly unlikely, but nVidia GPUs do have known failures, I've got 4 laptops that are at high risk of failing, due to this problem and one already has (Asus Z92T, GFG7600 card), the other maybe on the brink of failing (Acer Aspire 9810, GFG7600 card) as I see strange abnormalities from time to time, one which has a years warranty, soon to extend it, because it could be at a huge risk of the nVidia failure (Acer Aspire 9920G) and one that has a possiblity, depending if the card was shipped before the laptop was made, because the shipment date when nVidia changed some materials was a day before my laptop was manufactured. (Acer Aspire 8920G - has a 3 year warranty.)
I wouldn't speculate a problem with the graphics card, until you stress test it and be accertain that the GFX chip is on its way out and annoyingly, soon after you recieved it.
While you are at it and assuming you are on about the laptop, get an extended warranty, especailly with nV chips!