My iMac freezes up intermittently. The cursor can be moved but nothing responds. I just have to shut it down and restart. It's been doing this before and since my hard drive failed and was replaced. I'd also increased my memory from the original 4GB to 12GB thinking that was the problem. But neither the HD replacement or the memory upgrade changed anything. I can go for days, sometimes or a week or more without a problem. Then it'll freeze a couple of days in a row, or even twice in one day.

It's a late 2009 27" iMac, running Mavericks 10.9.4.

  • Seems random, but what kind of keyboard and mouse do you have - wired, BlueTooth, other? Commented Sep 12, 2014 at 14:05
  • ..and have you tried the Apple Hardware Test? support.apple.com/kb/HT1533?viewlocale=en_US&locale=en_US Commented Sep 12, 2014 at 14:13
  • After it freezes, and you are able to start it up, go to Console and get a log from around the time stamp of the freeze and post in here.
    – Ruskes
    Commented Sep 12, 2014 at 15:53
  • My mouse and keyboard are wireless blue booth. They work fine. Haven't tried the Apple Hardware Test...was not aware of it. Next time I will go to Console and get the log and will post it. Thanks to all.
    – Goody
    Commented Sep 12, 2014 at 18:33

2 Answers 2


It could be that your iMac freezes because some component is getting too hot (in my opinion Apple’s temperature thresholds are not setup for reliability, but rather for “comfort”).

You can list temperature sensors with:


If you have MacKeeper installed, get rid of it. That'll do it.

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