Grey spots on documents
Big rectangular gray spots are beginning to appear on some of my documents, mostly on quick view, preview and games. They go away for a while after I reboot, but eventually reappear.
These spots are on only visible on the iMac's screen Vs an external monitor correct? If that is there case the screen is going on you. If the external display is also showing them then the GPU is failing.
When you see these spots show up on the document you mean the printer's output (paper) not the displays image of what you are working on correct?
Did you try cleaning the printer?
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