1 Feb

Reset PRAM and NVRAM

  1. Make sure the computer is turned off.
  2. Find the following keys on your keyboard:
    cmd + alt + P + R
    (Some keyboards may show cmd as an Apple and alt as option.)
  3. Turn on the Mac and hold down all 4 keys at the same time.
  4. Keep them held down until you hear the startup chime for the second time.

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