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Question Mark Folder and Keyboard isn’t working

I am trying to resurrect an old Mac Pro desktop. When I turn it on I hear the Apple ding, but after about 30 seconds the folder with the question mark appears. I know this means it’s trying to find an OS. But the hard drive inside the machine (brand new, a fresh os installed from another computer) has an os on it - so it shouldn’t be flashing. I tried a keyboard shortcut - but the keyboard isn’t working - even the num lock button won’t light up - but it works on any other computer. Pls advise! Thanks so much

Posted on Nov 16, 2017 3:37 PM

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Question Mark Folder and Keyboard isn’t working

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