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IMAC OS X (10.5) BLACK SCREEN
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Fresh-Faced Recruit
Join Date: Jul 2012
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Offline
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WHEN SWITCHED ON, CHIMES. MOUSE IS ON AND KEYBOARD IS ON. SCREEN BLACK. COULD IT BE A GRAPHIC CARD NEEDS CHANGING?
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Moderator  Join Date: Apr 2000
Location: Gothenburg, Sweden
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Hello and welcome to our forums. Please do not use all caps, that makes it harder to read.
It can be a lot of things wrong. We will be better able to help you if you tell us which model iMac you have. Is it white or aluminium? PowerPC or Intel x86? What size is the display?
One possible solultion is resetting the SMC or SMU depending on exactly which model you have.
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The new Mac Pro has up to 30 MB of cache inside the processor itself. That's more than the HD in my first Mac. Somehow I'm still running out of space.
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Fresh-Faced Recruit
Join Date: Jul 2012
Status:
Offline
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IMac OS X (10.5), model no: A1224, aluminium, 20" , intel.
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Moderator Join Date: Apr 2000
Location: Gothenburg, Sweden
Status:
Offline
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Then I suggest first trying to reset the SMC with the help of the link above. After that, see if you can boot into diagnostics.
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The new Mac Pro has up to 30 MB of cache inside the processor itself. That's more than the HD in my first Mac. Somehow I'm still running out of space.
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