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| + | [title] PRAM and NVRAM reset |
|---|---|
| + | [* black] Shut down your Mac. |
| + | [* black] Then turn it on and immediately press and hold these four keys together: Option, Command, P, and R. |
| + | [* black] You can release the keys after about 20 seconds, during which your Mac might appear to restart. |
| + | [* black] You can release the keys after the Apple logo appears and disappears for the second time. |
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