How do I reset the PRAM of my MacBook Pro in OSX Mountain Lion?

Question

Level 1

46 points

How do I reset the PRAM of my MacBook Pro in OSX Mountain Lion?

Dear all, I bought a new MacBook Pro 13" (Mid 2012, MacBook Pro 9,2) and upgraded the OS to Mountain Lion. There have been some crashes (apparently related do Chrome), so I wanted to reset the PRAM to "clean up" a bit, but it didn't work. I made sure I followed the standard procedure (as in my old MacBook Pro 15" Late 2008, which was stolen), and held properly the CMD+OPT+P+R combination before getting the grey screen. Just to be sure, I tried shutting down and turning on again and also just restarting my Mac. Neither worked. What may be the problem? Thanks.

MacBook Pro, Mac OS X (10.7.2)

Posted on Aug 21, 2012 10:19 AM

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Answer 1

Aug 21, 2012 10:30 AM in response to morceg@o

http://support.apple.com/kb/HT1379 PRAM http://support.apple.com/kb/HT3964 SMC

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Answer 2

morceg@o Author

Level 1

46 points

Aug 21, 2012 12:10 PM in response to lizardcarter

Dear lizardcarter, thanks for your reply. Nevertheless, I tried these standard procedures, and they didn't work. Strangely, what I get is the recovery screen with the CMD+OPT+P+R combination.

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Answer 3

Aug 21, 2012 12:22 PM in response to morceg@o

Does anything else crash besides chrome?

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Answer 4

wjosten

Level 10

95,321 points

Aug 21, 2012 1:27 PM in response to morceg@o

Read here:

http://support.apple.com/kb/PH11243

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Answer 5

Aug 21, 2012 1:31 PM in response to morceg@o

Resetting the PRAM should not have any affect on the way Chrome operates.

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Answer 6

morceg@o Author

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Aug 21, 2012 3:22 PM in response to lizardcarter

Dear lizardcarter, no, I have the impression that all crashes are somehow related to Chrome.

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Answer 7

morceg@o Author

Level 1

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Aug 21, 2012 3:24 PM in response to Templeton Peck

Dear Templeton Peck, you're right, I just thought a clean up might help. But it's strange that I cannot reset the PRAM anymore. In the former OS the standard procedure described in the official links above always worked.

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Answer 8

wjosten

Level 10

95,321 points

Aug 21, 2012 3:26 PM in response to morceg@o

Did you bother to click on the link I provided you?

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Answer 9

Courcoul

Level 6

18,558 points

Aug 21, 2012 3:38 PM in response to wjosten

The fact that Apple saw fit to put out a ML-specific PRAM-reset note confirms that the key sequence is unchanged. Yet I've witnessed quite a few instances of people complaining that it did not work on that OS. Will try when I get on my testbench later tonight. But still seems odd to have such a recurrence of the same complaint.

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Answer 10

morceg@o Author

Level 1

46 points

Aug 21, 2012 4:25 PM in response to wjosten

Dear wjosten, of course I "bothered" to click on the link. Did you bother to read my previous posts, when I told that I had tried these standard procedures before?

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Answer 11

morceg@o Author

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46 points

Aug 21, 2012 4:29 PM in response to Courcoul

Dear Courcoul, thank you very much for the reply. Yes, other people are complaining about the same problem here and in other communities. But they always get the same answer ("try the standard procedure"), and it simply doesn't work. It's really odd.

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Answer 12

Jun 29, 2013 1:17 PM in response to morceg@o

Did you ever find a fix? When I hold the combination that everyone is suggesting the same thing your describing happens. The computer does not restart and it loads the recovery screen.

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Answer 13

morceg@o Author

Level 1

46 points

Jun 29, 2013 5:57 PM in response to mnovetske

No solution yet, unfortunately...

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