Previous 1 2 Next 19 Replies Latest reply: Sep 5, 2012 5:48 AM by Ralph Landry1
Panagiotis_P Level 1 Level 1

I have a macbook pro and i just update it with OSX Mountain Lion. At last few days an annoying sound start to play and after that the macbook stack. Now, it restarted automatically and show up on the apple logo screen about kernel version and something like panic(cpu 0 caller etc.) Also Debugger called:<panic> etc. Does anyone know about this situation what i can do? Thanks a lot.

MacBook Pro, OS X Mountain Lion
Reply by Ralph Landry1 on Aug 4, 2012 5:12 AM Helpful

Hope that helps, kernel panics often resolve with just a safe mode boot and then restart again...unless there is a physical problem such as bad memory but that usually shows up just after installing the memory, not some time later.

Reply by Ralph Landry1 on Aug 4, 2012 7:39 AM Helpful

Three beeps at startup means there is a problem with the memory,the modules may be faulty or not seated properly.


1 beep-No Ram installed

2 beeps-Incompatible Ram

3 beeps-No good memory banks

4 beeps-No good images in Boot Rom

5 beeps-Processor is not useable


If you are comfortable working inside your MBP, take the back off and remove then reinsert the memory modules.  See it that helps.  If not, a visit to the Apple store in Nicosia would be a good idea and have the techs check it and if it is only bad memory, you can see what they will charge you to replace the memory modules.

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