I recently have been having start up problems, when I would hit the power button I would sometimes hear a healthy startup and everything would boot up and then I just get a black screen and you can still tell it has power. I would start and restart untill it would boot. Now the only way the machine will start is if I unplug the moniter cord and plug it back in then it will start!!! Very strange! Any suggestion would be greatly appreciated!
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G5 powermac power issues
- Thread starter pamijo
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Sounds like a power supply issue but do you have any third party RAM? What sort of peripherals do you have plugged in? 
Well, it's increasingly sounding like an issue for an Apple Technician.
Nevertheless, try running the Hardware Test. It either came on a separate CD with your OSX discs, in which case you insert it and start up holding C, or it's bundled into your OSX DVD in which case you start up whilst holding D with the DVD inserted.
Nevertheless, try running the Hardware Test. It either came on a separate CD with your OSX discs, in which case you insert it and start up holding C, or it's bundled into your OSX DVD in which case you start up whilst holding D with the DVD inserted.