2007 MacBook high cpu crash

Discussion in 'MacBook' started by Ih8reno, Dec 20, 2014.

  1. Ih8reno macrumors 65816

    Ih8reno

    Joined:
    Aug 10, 2012
    #1
    Hi everyone

    Somebody was purchasing my MacBook when he inputed some commands to make the computer use 100%cpu. It worked its way to 100 and then the message on screen showed to reboot the computer and that it has crashed. Is this normal because he said it wasn't.
     
  2. Altemose macrumors G3

    Altemose

    Joined:
    Mar 26, 2013
    Location:
    Elkton, Maryland
    #2
    Normally, high CPU usage crashes are thermal issues. Does the MacBook appear exceptionally hot when this happens? What commands did he enter?
     
  3. Ih8reno thread starter macrumors 65816

    Ih8reno

    Joined:
    Aug 10, 2012
    #3
    2007 MacBook high cpu crash

    Not 100% sure but it suddenly maxed out the processor. I had previously repasted the CPUs and thought I fixed the issue as this MacBook kept freezing in the past.
     
  4. Altemose macrumors G3

    Altemose

    Joined:
    Mar 26, 2013
    Location:
    Elkton, Maryland
    #4
    I would check the RAM as it seems like a more likely culprit. When executing tasks, both RAM and CPU are usually stressed and RAM exhibits these symptoms.
     
  5. Ih8reno thread starter macrumors 65816

    Ih8reno

    Joined:
    Aug 10, 2012
  6. Altemose macrumors G3

    Altemose

    Joined:
    Mar 26, 2013
    Location:
    Elkton, Maryland
    #6
    Big time!
     
  7. Ih8reno thread starter macrumors 65816

    Ih8reno

    Joined:
    Aug 10, 2012
    #7
    I put the original ram back in the machine when I was trying to sell it. Up to that point I was using other ram for personal use. I'm going to run memtest in single user mode and report back.
     
  8. Altemose macrumors G3

    Altemose

    Joined:
    Mar 26, 2013
    Location:
    Elkton, Maryland
    #8
    Good idea!
     
  9. Ih8reno thread starter macrumors 65816

    Ih8reno

    Joined:
    Aug 10, 2012
    #9
    Well it passed (new ram) and I'm running the yes test in terminal which uses over 100% cpu, no issues thus far.
     
  10. Altemose macrumors G3

    Altemose

    Joined:
    Mar 26, 2013
    Location:
    Elkton, Maryland
    #10

    Perhaps he was being a Slim Shady. Did he try to negotiate after the crash?
     
  11. Ih8reno thread starter macrumors 65816

    Ih8reno

    Joined:
    Aug 10, 2012
  12. Altemose macrumors G3

    Altemose

    Joined:
    Mar 26, 2013
    Location:
    Elkton, Maryland
    #12

    Try straining the CPU for a while...
     
  13. Ih8reno thread starter macrumors 65816

    Ih8reno

    Joined:
    Aug 10, 2012
    #13
    Tried using the "yes" method and taxed the cpu for awhile until the fans were loud and then stopped it. Seems to work fine. This Macbook has been kicking my butt since I bought it!
     
  14. Altemose macrumors G3

    Altemose

    Joined:
    Mar 26, 2013
    Location:
    Elkton, Maryland
    #14
    Does the CPU seem to be running too hot?
     
  15. Ih8reno thread starter macrumors 65816

    Ih8reno

    Joined:
    Aug 10, 2012
    #15
    Seems fine, here it is being stressed [​IMG]

    And back at normal function

    [​IMG]
     
  16. charles6980 macrumors newbie

    charles6980

    Joined:
    Dec 27, 2014
    #16
    Please use some real stress tests, such as the Mersenne prime search tool: http://www.mersenne.org/download/#stresstest

    Regarding the age of your laptop, consider consulting http://ifixit.com to give it a good internal cleaning, including thermal paste replacement. (I did that on the search for an issue with my laptop, and I'm very happy I did it because the fan activates much more seldom than before.)
     

Share This Page