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My iMac Won't Boot, I Turn It On And You Hear The Bong And The It Shuts Off. You Also See The Light Flicker On And Off What's Wrong

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I Think Your Hard Drive Is Dead. Try Replacing The Drive And Try To See What Happens

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If you have the boot disk try loading it by restarting it holding down the c key. If the hard drive image doesn't appear on the desktop it is bad, which is my guess of what the problem is.

Posted on Apr 22, 2008

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Mac g4 added more memory won't boot up


Possibly not twins, must be same chips.

remove insert old if not damaged and see it it reboots

May 17, 2013 | Apple iMac G4 Desktop

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Computer won't turn on


Due to age anything could be wrong.

Dec 29, 2012 | Apple iMac G4 Desktop

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I need to unlock a iMac running OS 10.6.1


Step 1:

Turn off your iMac G5

Step 2:

Power it back on. Right when you hear the startup sound, hold down Command and S together. This will bring up a black and white terminal prompt.

Step 3:

If at this point, it asks for a password (firmware password), power back down the iMac, change the amount of RAM (remove one stick of RAM and leave the other in), turn the computer back on and when you hear the start up sound hold down Command + Option + P + R. Keep holding until it restarts again. Once it restarts again, let it boot up, then shut it down again and put the stick of RAM back in. This will reset the firmware password and should allow you to continue onto the next step.

Step 4:

Once you are successfully at the command prompt, type the following commands, pressing enter after each line.

mount -uw /
rm /var/db/.AppleSetupDone
shutdown -h now

Step 5:

That's it! Once you boot back up, you should have a brand new administrator account that you can use to access all files and remove other accounts.

Dec 25, 2012 | Apple iMac G5 Desktop

2 Answers

My computer won't boot from the new disk warrior


Usually three beeps indicate a problem with the RAM, reseat the RAM and then try to boot up with disk warrior. Hope this hels.

Mar 27, 2012 | Computers & Internet

1 Answer

When I turn on the computer it takes a while to boot up, and when it does it stays idle for 10 seconds or so then shuts off?


Sounds like there may be a problem with your OS X.
You will need to boot from your OS X DVD and run your Disk Utility to do a repair on your operating system.
To do this, start your iMac and pop in your DVD. Once you hear the boot up sound, hold the Option/Alt key. You will be given the option to choose between your hard drive boot up and DVD boot up, so choose the DVD. It'll take a while longer to load than usual as you're booting from a DVD, but once your Mac has booted up, use Spotlight (Apple + Space, type "Disk Utility") to load up your Disk Utility program. Once you've got that open, select your hard drive on the left and click "Repair Disk Permissions" and then click "Repair Disk."
Once you're done, reboot and your Mac should be working good as new.

Mar 25, 2011 | Apple iMac Desktop

1 Answer

G5 keeps powering up for a few mins then switches off?


Thank you for contacting Fixya Support, I am glad to assist.

There are a few steps you can try to troubleshoot this issue:

Try a PMU Reset:
* Turn of your iMac if it is already turned off
* Disconnect all connections to the iMac except the power cord
* Now disconnect the power cord for approximately 20 seconds
* Reconnect just the power cable the keyboard, mouse and power cord, and then power your iMac G5 up.

* Check to see if the iMac boots up normally without power interruption.

* If the iMac G5 shuts off again, try these steps, another recommendation would be to remove all connections including the power cord, and lay the iMac G5 on soft cloth face down and with a philips screwdriver, remove the plate on the bottom of the iMac G5 where your RAM memory is located.
Before removing the RAM however, touch your hand on the metal boot to discharge any static current you carry for approximately 5 seconds.

Now remove each RAM card and then reseat (re-install) each card.

Restore the RAM card cover with your Philips screwdriver, reconnect your power cable, keyboard an
d mouse and turn on your iMac G5.

See if this second procedure helps if the first procedure does not work.

Let me know if this helps.

Regards

-Mactechtrainer

Sep 11, 2010 | Apple iMac G5 Desktop

1 Answer

Powers on , wont boot and cant insert a disc to get it to boot.


To eject an optical disc at startup, hold down the mouse key on a wired mouse immediately after turning the iMac on with the power button. Keep it held down until the disc ejects, which should occur within two minutes. If you hear the disc trying to eject but failing, it is physically jammed in the drive and will have to be removed by a professional technician.

May 17, 2010 | Apple Computers & Internet

1 Answer

Falt panel imac will not boot up


Try resetting the Pmu.
  1. Shut down the computer.
  2. Locate the following keys on the keyboard: Command, Option, P, and R. You will need to hold these keys down simultaneously in step 4.
  3. Turn on the computer.
  4. Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears.
  5. Hold the keys down until the computer restarts and you hear the startup sound for the second time.
  6. Release the keys.
Good luck

Sep 22, 2009 | Apple iMac G4 Desktop

2 Answers

My iMac G4 turns on and goes to the grey startup screen with the apple and loading circle, but stays there, and gets stuck, and after a few minutes shuts off on it's own.


You may have to reinstall you OS e.g. tiger, leopard with the disks that came with your computer. that should solve your problem  

Jul 18, 2009 | Apple iMac G4 Desktop

1 Answer

My iMac Won't Boot, The bong sound goes on and than my mac shuts off Whats Happened?


Try booting with a boot disk like the install disk or a Norton disk. If you cant see the hard drive image on the desktop it is bad. If you see the HD image the chances are you have a bad ram chip. To test the ram if you have more then one stick in there pull one at a time and try to boot. Hope this helps

Apr 17, 2008 | Apple iMac Desktop

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