I had already sent it back and they say there is nothing wrong with it
There was no problem with my old card and I have all the updates for the card itself and the BIOS so I am at a lost
Also I have a 750w novatech black edition
I would also send a printed version of this screenshot or even a USB stick with a video of the problem occurring. I had a suspected issue with my 560ti as it would freeze with scrolling coloured line artefacts, so I sent my mobo, CPU, RAM, PSU and the GPU all together (they were all under warranty) just to make sure and had it working within a week. (Turned out to be a really weird BIOS/driver conflict despite). Hope this helps.