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Unlock Bios Password iMac A1419 EMC2639 bios unlock needed

Salimeh Bolboli

Salimeh Bolboli

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Please try nvRAM reset:

  1. Power off your Mac.
  2. Press your Mac’s power button and then hold these four keys at the same time: ⌘ + option + P + R.
  3. Continue holding the keys until your Mac restarts for the second time. On older Macs, the chime will sound upon restart. On newer Macs, the Apple logo will appear and then disappear.
 
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