Power Mac G5 wont boot.

Hey everyone!
This is my first time posting here, but I get all my technical problems solved here, so thank you to everyone!
Anyway, getting on to my problem (which I cannot find a answer to)
My Power Mac decided the other day it wasnt going to boot up. All that would happen when I pressed the power button would be the red light (on the logic board) would flash while I can the button pressed it, I would hear 2 clicks like a relay, and that was it. Nothing, it would never boot.
So I switched the computer off at the wall, left it for 2/3 minutes, and all was fine, would boot and restart. But, if I shut down the computer, I would not be able to get it to turn back on, unless I switched it off at the wall again.
I do know that turning it off at the wall resets the SMU? So would there be a problem with my SMU or something? No idea if that is even possible!!
Can anyone shed some light on the problem? Just to let you know the computer was never droppped/banged/hit etc etc. I was on it, turn it off to pop out for a hour, came back and its been like that ever since
Any help will be much appriciated!
James

Hi James, and a warm welcome to the forums!
Not sure which Mac it is you have with the l essuseful new forums, but it sounds like the classic case of either a bad/low,/dead PRAM battery, or a leaking Capacitor.
Might be time to replace the PRAM Battery, 4 years is close to their lifespan, far less if ever without AC power, & if weak can cause really strange problems...
See which one your Mac has...
http://eshop.macsales.com/item/Newer%20Technology/CR2032/
http://eshop.macsales.com/item/Newer%20Technology/BAA36VPRAM/

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Power Mac G5 wont boot past the Apple Logo

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http://www.thexlab.com/faqs/kernelpanics.html
http://reviews.cnet.com/8301-13727_7-10344626-263.html
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Welcome to Apple Discussions!
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Power mac will not boot up

Hello and Good Afternoon,
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Thank You,
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http://www.appleserialnumberinfo.com/Desktop/index.php
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Specs:
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Power Mac G5 wont boot.

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