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iMac 20" detect external monitor

Hello,

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?

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

crwdns2893770:0crwdnd2893770:0crwdne2893770:0

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?

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not working have the same problem.

i suppose is an hardware problem

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@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 crwdns2893898:0crwdne2893898:0
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