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Model A1224 / Early 2009 / 2.66 GHz Core 2 Duo processor

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iMac 20" detect external monitor


I have a little problem my imac detects an external monitor but the monitor has never been connected to what might be in your opinion?

Rispondi a questa domanda Anch'io ho questo problema

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Please elaborate on why you think it is detecting an external monitor.


Can you give us some background on what happened here.

Are you seeing a faint image of the desktop and its icons when you take a flashlight held on the screen at a sharp angle?

Do you have a surge suppressor or UPS? Did you get a power disruption or lightning storm?


not working have the same problem.

i suppose is an hardware problem


@mayer because if i go in monitor option have 2 monitor option


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Does it still detect a monitor when you have everything disconnected other than the mouse and keyboard?

Try starting the iMac in safe mode; hold down the shift key during boot and login.

Let us know how it goes.

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i have the same problem


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Albano Doci sarà eternamente grato.
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