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If I understand the issue, it sounds like the
monitor screen is going out.
·
But there are a couple of things to try since
being close to a high voltage source or incorrect Resolution setting could
cause something close to that.
·
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Let us start with the Display resolution since
it is the easiest.
·
Hold down on the Apple in the upper left-hand
corner of your screen.
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1. Select System Preferences
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2. Click on the Displays icon
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3. In the box under Resolutions make
sure a resolution selected has 60 Hz if you are running a Flat Screen (LCD)
Monitor.
·
If that is not the issue, try moving the Mac to
a different location. (Next room)
·
If that does not work, try booting the machine
for the install disk, if it looks fine when running from the disk you could
have a corrupt driver. In that case reinstalling the OS should fix it.
·
·
Ok none of that works: Take the machine to your
local Apple store for the Genius to look at. He should be able to tell by
looking at it what is up.
·
Best of luck.
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