Question about Apple MacBook Pro Laptop Computer with Intel Duo Core 15.4 Inch PC Notebook

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Why is my mac locking up?

Recently my mac has been freezing randomly.

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Try using Disk Utility to repair permissions on the startup volume. Reboot.
Another option is to manually download the most recent OS patch from Apple and reapply it.
Worst case scenario, boot from the original CD, or most recent OS disk you have purchased, (hold down 'C' while booting) and do an 'archive and install'. This will reinstall your system - pay attention while doing this, you don't want to wipe your hard drive.  As always back up your stuff first.

Did the problem start after installing any new software or hardware?
Faulty RAM can be an issue also - if you have two chips, power down, remove one and run it for a while on one - see how that goes. If you can, (depend on the model) then swap them and do the same with the other one. Random freezes can be RAM related.
More detail about when it locks up would be helpful.
Papa

Posted on Jun 20, 2008

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Posted on Jan 02, 2017

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