Parts of desktop on Mac mini blurry
Mac mini desktop is blurry, or has the appearance of two layers that are unmatched- this covers all icons and Dock icons on desktop background. If I open and application and expand the window to cover most of screen, the blurriness goes away. If I shrink the window to covering roughly 50% of the desktop screen, the blurrinesd returns.
PRAM does not fix not turning on and off And I checked all cable and hdmi connections.
Anyone seen this And know a fix?
Mac mini, OS X Mavericks (10.9.5)