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start up error

  1. J

    iM 4,1-14,4 Scrambled start-up screen, cannot reinstall OS

    Hi. We have an old 27 inch iMac (2013 I think) that I cannot re-setup. It has an odd scrambled start-up screen as here. My task was to reset this with a new OS. I have formatted the hard drive. I can get to the recovery partition but attempting to reinstall the OS from online just returns a...
  2. E

    bluescreen if not shut down completey

    my macbook pro is giving me a blue screen (earlier it was black now it looks like on the picture) everytime i close it and dont use it for at least one day. (no complete shut down) if this happens i always need to force the shutdown with pressing the start button. what can this be?
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