Problem with sapphire hd7850 oc edition

Hi guys, i have a sapphire hd 7850 2gb ddr5 oc edition, while i'm playing games, sometimes, the pc blocks and the monitor shows orange and grey strips. i think that is the gpu, because it has 1 year, and the rest of the pc only 2 week, the driver is updated and i have windows 7, any idea?

I got this once. I was overclocking it, went to far and as I applyed the settings, these "orange and grey strips" appeared.

Maybe you should install MSIAfterburner or something simmilar and play around with your settings.

I hope this was helpfull and good luck

thanks for help, i setted the amd catalyst options to not completely use the gpu, and it seems fixed