Power mac beeps, fan goes to high, does not start up?

swapped out one of the harddrives, not the startup drive, now when I try to start up the computer beeps a few times, fan goes into hyperdrive and stays there. Nothing else happens. Computer does not start up.

If it won't start again...
If you're sure the RAM is good, try the Hair Dryer trick...
http://discussions.apple.com/message.jspa?messageID=13240047#13240047
https://discussions.apple.com/message/15223603#15223603
https://discussions.apple.com/message/15499912#15499912
https://discussions.apple.com/message/15613068#15613068
https://discussions.apple.com/thread/3270112
https://discussions.apple.com/message/16053892#16053892
No power light at all...
https://discussions.apple.com/thread/3692775?tstart=0
It can show on any G5, and even many other computers & electronic devices of the period.
http://www.macintouch.com/reliability/pmg5.html
http://lowendmac.com/ppc/power-macintosh-g5.html
And see this last one in particular...
https://discussions.apple.com/message/16781690#16781690

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When the Power light blinks in a deliberate pattern at Satrtup, that indicates not enough RAM, in full working order, is available.
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Hardware monitor is the application that will monitor temps & other stuff (CPU voltages, fan speeds) http://www.bresink.de/osx/HardwareMonitor.html. I used it on my dying G5, the data always ended abruptly when the crash happened.
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http://discussions.apple.com/message.jspa?messageID=8391812
Good luck & tell Applecare about it if you are covered.

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Hello almutaze,
Having a nonfunctioning device can be frustrating. As it turns out, I have located an article that can help with devices that aren't responding. It contains a number of helpful troubleshooting steps:
iOS: Not responding or does not turn on - Apple Support
Your iPhone, iPad, or iPod touch may occasionally stop responding to buttons, switches, or touchscreen input and may exhibit one or more of these symptoms:
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If a single application is not responding or stops responding when it opens, you can force it to close.
If the device is unresponsive or if certain controls aren't working as expected, restart your device.
If the device remains unresponsive or does not turn on (or power on), reset your device.
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If you are using an iPad, ensure that it's connected to the USB Power Adapter supplied with the device.
Let it charge for at least twenty minutes, then see if it starts normally.
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If the above steps do not resolve the issue, or the if the screen remains black or shows a persistent Apple logo, try restoring with iTunes:
Connect the device to your computer and open iTunes.
If the device appears in iTunes, select and click Restore on the Summary pane. Learn more about restoring iOS software.
If the device doesn't appear in iTunes, try to force the device into recovery mode, and then restore it.
If the above steps do not resolve the issue, contact Apple.
Thank you for contributing to Apple Support Communities.
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Hey terremo,
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http://support.apple.com/kb/HT1573
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When I turn it on I hear a loud beep
Beeps are an indication the RAM (memory) is failing or has failed.
Power On Self-Test Beep Definition - Part 2
If you feel confident doing this, you can purchase RAM online. Crucial comes highly recommended. You can use their scanner > Memory upgrades from Crucial.com - Crucial Mac System Scanner
And uninstall the bad RAM, then reinstall new > iMac: How to remove or install memory
Or, take your Mac to an Apple Store.
The beep sound is not permissions related.
Message was edited by: CS

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Sounds a bit like the Power Supply, but...
If you don't know the model, find the Serial# & use it on one of these sites, but don't post the Serial# here...
http://www.chipmunk.nl/klantenservice/applemodel.html
http://www.appleserialnumberinfo.com/Desktop/index.php
How to find the serial number of your Apple hardware product...
http://support.apple.com/kb/HT1349
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http://support.apple.com/kb/HT1939

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Power mac beeps, fan goes to high, does not start up?

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