Question about Apple iMac G4 Desktop

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I book g4

Freezes at start up screen , mac os x, blue bar is full, stays on this screen forever

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Some of the start up files have been corrupted or are missing. Start up from the OSX system disc and them run Disc Utilities from the installer toolbar. Check the hard drive for errors. Repair any errors if they are found. If it's not possible for Disc First Aid to repair the hard drive you will need to replace the drive and re-install OSX.

Posted on Dec 30, 2008

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Imac g4 freeze restart


This is a sign of memory issues with your Mac. Replacing the memory should not be very expensive.

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Why does the screen of my iMac G4 stay black on start up?


Test the system on an external monitor. If OK, replace the screen.

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My iMac g4 1ghz wont boot


First hold down the right hand shift key down when you start, this does some housekeeping, The next step is if you have an install disk or tiger disk then start up from it by holding the "C" key down when starting and inserting the dvd, if this loads then go through the install menu, dont worry you do not need to actualy install just select language and then you get to a screen where you can select utilities from the menu bar, then select disk utility and repair permissions, after that do a repair disk then quit disk utility and change the startup disk back to the hard drive and restart, if for some reason you cannot repair the disk, this refers to the catalogs it uses to keep track , not the data itaelf, in that case you need a 3rd party utility like Disk warrior.

Feb 24, 2010 | Apple iMac G4 Desktop

1 Answer

Computer won't start up correctly


Considering you have tried the Safe Boot mode to correct this, try to resolve this from the hardware side:

Procedure #1:

Here are some steps you can try to resolve the issue:

• First, hold in your power button for approximately 10 seconds to do a hard shutdown, if you have not already turned your Mac off.

• Once your Mac is shutdown, you will need to perform what is called a PRAM reset (Parameter RAM)

• Locate the following keys on the keyboard: Command, Option, P, and R. You will need to hold these keys down simultaneously .

• Turn on the computer.
• Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears.

• Now, hold the keys down until the computer restarts and you hear the star tup sound for the third time.

• Release the keys and allow the Macbook to start up.
If the iMac still does not start up to your Desktop correctly, go on to the next procedure:
----------------------------------------------------------------------
Procedure # 2

-PMU RESET-

The Power Manager is an integrated circuit (computer chip) that is usually on the logic board of your Mac computer.

It is responsible for power management of the computer. It controls backlighting, hard disk spin down, sleep and wake, some charging aspects, trackpad control, and some input/output as it relates to the computer sleeping.

• If the computer is on, turn it off.
• Disconnect all the connections going into the Mac except for the Power cord.
• Once all connections have been disconnected, remove the power cord from the iMac.
• Wait 1 minute.
• Reconnect the keyboard, mouse and power cord back into the computer.
• Press the Power button to restart the iMac computer.

• Observe if it starts up to the main desktop this time.
If it does not however, you may have an issue with your current Mac OS X directory or the issue could be hardware related.
-----------------------------------------------------------------------
Here is a comprehensive reference for you regarding Additional Troubleshooting for Blue, Gray screen issues and more, that you can also review:
Apple Support Link:
Startup Issues for Macs
----------------------------------------------------------------------
If all else fails, you may need to visit your local Apple retail store Genius bar or local Apple-authorized service center in order to have your iMac at least diagnosed to find out what the core issue is.

Regards,

-Mactechtrainer


Jan 30, 2010 | Apple iMac G4 Desktop

1 Answer

APPLE IMAC G4 - TRYING TO INSTALL OS WITHOUT DISK EJECT BUTTON


Reastart the iMac and at the same time hold down the mouse left click button. If that does not work.
  1. Restart the computer.
  2. Immediately after the startup sound, press and hold the key combination Command-Option-O-F.
    Note: The Command key has the Apple and (commandkeysymbol.gif) icons on it.
  3. Release the keys when you see a white screen that says "Welcome to Open Firmware."
  4. At the prompt, type: eject cd
  5. Press Return, then wait a few seconds. The disc drive should eject any disc that is present, and "ok" appears behind your command when the action is complete.
  6. Type: mac-boot
  7. Press Return.

Dec 11, 2009 | Apple iMac G4 Desktop

1 Answer

I was given an old emac g4. it worked ok, slow but worked. the dude that gave it to me had all his files in one directory, i moved some desktop items to make room for photoshop. now the box turns on ok,...


If you are not concerned about any of the files on the computer, I suggest just wiping it and reinstalling the OS from the original software discs - this will ensure there's absolutely no issues with the files on the computer. If you are concerned about saving data, this could get tricky - as it sounds like you've moved something in the user that the OS needs to boot. If that's the case, there's an "archive and install" option when you go to install, more info on that here. When performing this archive and install, be sure not to check-mark the box that says "preserve users and settings", as the user is corrupted - what it will do is stick the user in a folder on the drive called "previous systems", and you can access the data later from the new user created during the repair installation.

Good luck!

Nov 04, 2009 | Apple eMac G4 M9425LL/A Desktop

1 Answer

Mac Powerbook G4 won't (completley) start and won't turn off


All you need to do is a System Repair. You have to boot the Mac with the CD/DVD (as if you were to install the OS X again, but when you get the desktop, you are given options to repair your current installation. (Follow the instructions on screen). It will take about 20 minutes to complete (depending on your processor speed).

Apr 19, 2009 | Apple eMac G4 Desktop

2 Answers

Emac stalls on the OS X start-up


Start here...   Resolve startup issues and perform disk maintenance with Disk Utility and fsck  Mac OS X: How to start up in single-user or verbose mode  If that doesn't help, try booting into Safe Mode and see what happens, if it comes up hopefully another restart may solve, if not, you can at least use this as a starting point to try and resolve. Safe Mode will allow you to get around, surf, etc...   What is Safe Boot, Safe Mode?   Mac OS X: Starting up in Safe Mode
If Safe Mode comes up alright, I would install AppleJack, excellent troubleshooting article can be found here... Troubleshooting Tools: AppleJack  Another excellent free tool for performing maintenance is Onyx (be sure to download the right version for your system). Install the package, then run it, it will check your drive and the structure, after this, click on the automation tab and check on everything for Maintenance, Clear Cache, Cleaning, and check on Reset -> LaunchServices database and Mail's Envelope Index. When it completes, restart. Repeat any time something seems flaky, if not try to run at least once a month. 

Feb 01, 2009 | Apple eMac G4 Desktop

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