I recently upgraded to Windows 8 and now Photoshop is not functioning as normal when running on Windows 7. Mainly when a modification is made to an image i.e, cropping, unsharp mask, etc. the image will be blacked out, requiring clicking on the canvas area to reacquired the image. Also the canvus changes from my neutral gray setting to a grid or black background when modifications are performed. I reinstalled Photoshop CS6 Ex after the new Windows 8 installation. Any advice?
This is a known problem with Win8, been there since it was introduced and ball is in MS court.
Update your drives as sometimes this helps. Otherwise you wlll have to set the GPU to Basic mode.