3 Replies Latest reply: Oct 27, 2012 1:39 PM by -Rotten Apple-
lapresle Level 1 Level 1 (0 points)

I have an old iMac G5 that was working fine when I put it in storage. This was a few years ago and I tried to start it up and I can't get past the gray screen with the dark gray apple. I have a wireless keyboard and held down the shift key to start it in safe mode, but that didn't work. I'm able to view it as a fire-wire drive by connecting it to my MB Pro and holding down the T key when I start it. Anysuggestions?

  • 1. Re: startup troubles iMac G5
    Klaus1 Level 8 Level 8 (44,485 points)

    Start by replacing the PRAM battery.

  • 2. Re: startup troubles iMac G5
    steve626 Level 4 Level 4 (1,405 points)

    In addition to replacing the PRAM battery as was suggested, you may need to use a wired keyboard (USB) to be able to use some of the special startup options (such as safe mode with shift key held down, which is a good thing to try).


    Also, try resetting the SMC, which can be done as follows: shut down the computer, remove ALL connections to the computer, including the power cord, all usb and firewire peripherals, etc. Wait 60 seconds. Then, while holding in the power on button, plug in the power cord to the back of the computer. The release the power button and push it one more time to start up.

  • 3. Re: startup troubles iMac G5
    -Rotten Apple- Level 1 Level 1 (45 points)

    If you power up the machine and press Apple key + V you should get text lines instead of that Apple logo, last line usually tells why/where the booting hangs. iMac G5 machines had lots of troubles with graphics card, I know for a fact that sometimes when graphics card is failing it might work just fine under very light load (eq. booting screen) but will hang when its acceleration features are enabled. Hopefully it is not hardware problem. One option would also be to try to boot from disc and use Disk Utility to repair the disk, you might also click repair permissions just to be sure.