Question about Apple Power Mac G4 Dual Mac Desktop

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G4 MAC LOCKING UP

After boot, after few minutes, the computer locks up, I have changed the hdd and reload, changed the memory, what else can it be? system board, cpu, heat sync, and are they expensive to replace?

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  • Glenn Upton-Fletcher May 11, 2010

    Is there any history of this unit being dropped, fallen over etc.?

  • Andrew Bowmaker
    Andrew Bowmaker May 11, 2010

    By locking up, do you mean freezing, or slowing down? Do you hear clicking coming from you MAC sometimes?

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After boot??? Have you tried holding down the shift key (Safeboot). If you can log into your account then check startup items in systemprefs/user accounts/startupitems

If it still crashes you need to create a new user account. Log in and if that works then copy all data from old account by using Batch Mod on old users folder. Do not copy anything from user library.


Posted on Jul 15, 2008

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Possibly not twins, must be same chips.

remove insert old if not damaged and see it it reboots

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

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Thank for contacting Fixya, I will be glad to assist you.

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.

• 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 startup sound for the third time.

• Release the keys and allow the Mac to start up.

If neither of these processes do not work, have your RAM memory checked, as this could be a factor in your G4 not booting up.

One other factor to consider, especially given consideration of the flashing light and no boot up, depending on the type of G4 mac you have, would be the power supply, which is what gives your G4 the power to boot up and function.

Hope this helps.

Regards,

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The iMac G4 17" freezes cursor moves but nothing works.


Could be a lot of things. Try running Disk Utility from your install DVD:

http://support.apple.com/kb/ts1417

After that, if issues persist, try booting in Safe Boot Mode:

http://support.apple.com/kb/ht1455
If the issue is resolved in Safe Boot, try removing third party startup items:
http://www.thexlab.com/faqs/startupitems.html


If the issue persists in Safe Boot mode, try a new user.
http://docs.info.apple.com/article.html?path=Mac/10.5/en/8235.html
If issue is resolved in a new user, then you know it's something just in your user.
Delete the contents of the following, where ~ represents your user's home folder:
~/Library/Launch Agents
~/Library/Launch Daemons
~/Library/Startup Items
~/Library/Caches

This will usually resolve the issue.

If it persists in the new user, then the issue is likely with the operating system itself. At this point you should Archive and Install:

http://support.apple.com/kb/ht1710

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1 Answer

Can I


yes you can with the help of software.
Hope this helps. Please rate my response.
Thanks.
Have a good day.

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You may have mean 1.5 GB of RAM. OK. YYpur problem may be your hard drive. It is not normal to take so long to load Tiger in a Mac 933 (It took less than 1 hour on a Mac G4/466 MHz).

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Hi,

When you ran diagnostics, were you starting up from the AppleCare CD/DVD (or whichever diagnostics disc it was)? If you were and the system didn't crash, that would likely point to a software problem causing your trouble. Have you tried booting up in 'safe mode' by holding down the SHIFT key? That would be my next troubleshooting step. Also, what computer is this?

Jun 26, 2008 | Apple Power Mac G4 Dual Mac Desktop

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