Computer turning off by itself..

Discussion in 'Macintosh Computers' started by GyroFX, Aug 26, 2003.

  1. GyroFX macrumors 6502

    Jan 14, 2002
    Los Angeles and NorCal
    hi, during operation, my G4 tower would all of a sudden turn itself off. I'm not sure what the problem is here. Maybe i have a bad power supply?...something wrong with the internal power supply? this problem actually just came back, as i fixed this before by plugging the computer into another electrical outlet. Any suggestion would be helpful, thanx
  2. crazytom macrumors 6502a


    Jul 23, 2002
    That's pretty scary! It could be a number of things. One you already mentioned: bad power supply. It could also be that your machine is overheating. Check to make sure all of your fans are working. Also check to make sure you don't have a timed shutdown (though, you'd probably figure this out if it happened at the same time everyday). You might try resetting the PMU to see if that helps: it's the small button on your motherboard, check the Apple website for the exact location and procedure for your machine. Good luck!

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