Every time I put my (new) iMac to sleep, it reboots?

Discussion in 'iMac' started by blurb23, Aug 21, 2012.

  1. blurb23, Aug 21, 2012
    Last edited: Aug 21, 2012

    blurb23 macrumors 6502a

    Joined:
    Feb 25, 2007
    #1
    It's a new 21.5" Late 2011 base model running Lion.

    I didn't start doing this until this afternoon, after I installed additional RAM. I'm assuming this has to be related to it somehow.

    I installed a 2x4GB set (in addition to the standard 2x2) for a total of 12GB in the system. In System Profiler, it's showing the correct amount installed.

    However, whenever I go to put the machine to sleep, it'll 'sleep' for a few moments, then do a full restart (not just wake from sleep). I tried shutting down the machine, and that worked. However, even after a full shutdown, the sleep issue still persists. I tried resetting the PRAM but the problem still exists.
     
  2. Mac2133 macrumors member

    Joined:
    May 31, 2012
    #2
    2x4 = 12? :) maybe that's why its rebooting.... it just can't sleep.
     
  3. blurb23 thread starter macrumors 6502a

    Joined:
    Feb 25, 2007
    #3
    Heh, I put 8 in to go along with the factory installed 4.
     
  4. cosmicjoke macrumors 6502

    Joined:
    Oct 3, 2011
    Location:
    Portland, OR
    #4
    mix and matching different sticks of ram could be your problem... try just the two sticks you bought... if it continues, try just the stock ram that came w/ the imac etc... you're gonna have to experiment.
     
  5. John T macrumors 68020

    John T

    Joined:
    Mar 18, 2006
    Location:
    UK.
    #5
    Do you have an external HD connected (for, say, Time Machine)?
     

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