Can't turn off restarting after power failure

Discussion in 'Mac Basics and Help' started by tealemon, Jul 19, 2014.

  1. tealemon macrumors newbie

    Joined:
    Mar 19, 2013
    #1
    I've been having some trouble with a faulty UPS lately, seems to be too slow at switching from AC to battery power, which causes an interruption in power supply to the computer.

    The UPS is going to the service next week but what I want to figure out in the meantime is why it is that every time there is a power interruption, the computer restarts itself?

    I have checked all power settings and it isn't ticked anywhere that it should restart after power failure:

    [​IMG]

    [​IMG]

    I even turned off all automatic shutdown options for the UPS... but it made no difference.

    [​IMG]


    It also made no difference when I disconnected the UPS USB connection to the computer. So I don't think it's a software/model/compatibility problem.

    Any idea where else to look, any other way to stop it from restarting?

    Oh and, I'm on Snow Leopard, Mac Pro 1,1.
     
  2. Altemose macrumors G3

    Altemose

    Joined:
    Mar 26, 2013
    Location:
    Elkton, Maryland
    #2
    The UPS may need to be repaired since it still causes an issue even without the USB cable connected.
     
  3. tealemon thread starter macrumors newbie

    Joined:
    Mar 19, 2013
    #3
    Yes, the UPS is broken, I stressed that in my first sentence.

    The UPS however is not what causes the computer to restart instead of just shut down on power failure!
     
  4. Altemose macrumors G3

    Altemose

    Joined:
    Mar 26, 2013
    Location:
    Elkton, Maryland
    #4

    Try disconnecting the UPS or uninstalling the software then zap the PRAM.
     

Share This Page