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SMC and PRAM Reset

SMC RESET

 

  • Shut down the computer. 
  • Unplug the computer's power cord and ALL peripherals. 
  • Wait 15 seconds. 
  • Attach the computers power cable. 
  • Wait another 5 seconds and press the power button to turn on the computer.

 

PRAM RESET

 

  • Shut down the computer. 
  • Locate the following keys on the keyboard: Command, Option, P, and R. You will need to hold these keys down simultaneously in step 4. 
  • Turn on the computer. 
  • Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears. 
  • Hold the keys down until the computer restarts and you hear the startup sound for the second time. 
  • Release the keys.

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