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My G4 wont boot up. After pressing power on, I hear the chime then it powers off. I xcan hear the hard disk running

After pressing power on, I hear one chime then it powers off. I can hear the fan & hard disk running, the CD starts to spin before it shuts down. Swapped battery, removed/replaced each of the 3 memory cards in turn. Nothing on the screen, in fact the monitor power light doesn't go from orange to blue so there is no attempt to send video to it. I tried brand new hard drive & got the square/question mark on screen... thought this was progress but can't get it to boot from the Operating System CD. any ideas?

PowerMac

Posted on Nov 7, 2012 9:14 AM

2 replies

Nov 8, 2012 10:15 AM in response to Community User

Resetting the Logic Board


Resetting the logic board can resolve many system problems. Whenever you have a

unit that fails to power up, you should follow this procedure

before replacing any modules.

1 Unplug the computer.

2 Press the Power On button on the front of the unit.

3 Open the side access panel.

4 Remove the battery from the logic board.

5 Wait at least 10 minutes before replacing the battery.

6 Make sure the battery is installed in the correct +/-

direction.

7 Reassemble the computer and test the unit.


 Cheers, Tom 😉

My G4 wont boot up. After pressing power on, I hear the chime then it powers off. I xcan hear the hard disk running

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