Weird gpu renders.

I am getting weird gpu renders with blender 2.78. At first i thought it was an isue with 2.78 and the latest amd driver installed on my pc yesterday. But remembering that the first few renders in 2.78 was fine i understood it was more likely it was a setting of some sort. Even after uninstalling the driver, and trying blender 2.77 the problem was stil around.

Now i dont know how to proceed, i have included a few images. At very few samples you can actually see the model.

Problem solved but i am stil abit curious. I uninstalled using a progrtam that digs much deeper than the default uninstall, then i reinstalled and the problem was solved. Not sure what might have caused it…