Question about Apple Power Mac G5 Desktop

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Dual 1.8 gHz mac running Tiger 10.4

I accidentally popped the wrong fuse in my house when attempting to turn power off in one part of the house while Tech Tools Pro was running an optimization.  I turned off the power to my computer instead.  Ever since the computer doesn't get past the gray screen with the progress indicator.  I will, however, boot up from the Tech Tools disk, but can't do anything with it.  All the tests run by Tech Tools "passed"  hardware, software, volumes, etcc...
Please, can you help?

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  • MG808 Jan 18, 2008

    I've not been able to find it.  I tried with a previous version 10.2 to no avail.

  • MG808 Jan 18, 2008

    I did exactly as you suggested cammedic, but the screen stops and stays at the gray screen with the apple.  Can you figure out what may be wrong.  One of the network guys at work said that while it was optimizing it might have been in between files and when the power when out it got stuck and is now searching for a file that it can't find.  He also suggested to reboot up from the install disk.  Any other suggestions?  Thanks!

  • MG808 Jan 18, 2008

    Well, I've reset my Open Firmware and everything else 
    you've suggested, cammedia,unfortunately, I'm still in the same boat.

  • Anonymous May 11, 2010

    Have you tried booting from your Tiger 10.4 Installer disk?



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Hi. You could try a PMU/SMU reset

Good Luck.

Posted on Jan 18, 2008

  • Anonymous Jan 18, 2008

    Reset the NVRAM by restarting the computer and holding command + option + O + F and typing reset-nvram, reset-all.

  • Anonymous Jan 18, 2008

    Hmm, I've really run out of easy ideas shy of the original one. The 10.4 disk is still the best option. You might try the 10.2 disk once again after all the resets.



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