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I have an iMac mid-2010 (11,3) that is showing a small gap at the top and left side of the screen in the built-in display. It is almost like the screen position is off, or the display is not being fully stretched. There used to be a way in System Preferences to change the screen position in older OSX versions, but that's since gone.

Display Gap

I did just replace RAM, could that cause this? And is there a way to fix it?

  • One way to see if the RAM is the culprit (I doubt it...) take it out and put the old RAM back in. – Steve Chambers Jun 5 at 21:19
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I have the same model with replaced RAM as well. You can try this. Open system preferences and click on display/Scaled. Now set the display to a couple of different resolution values and then return to your desired value. If offset is still apparent, try a different resolution.

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  • I tried that and no dice. I'm wondering if the actual screen somehow got shifted inside of the computer. – EMAW2008 Jun 5 at 19:51
  • It sounds that way but I have no idea how to check it. – jmh Jun 5 at 21:20

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