Question about Apple Power Mac G5 Desktop

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Mac G5 shutdown and now won't power up

My Mac G5 has shutdown unexptedly and now won't power up. There is no response at all to pressing the startup button. I have unplugged it and reseated all the RAM but it still won't power up. I have checked the battery (which is a round barrel shape 3.6v not a flat round type) on a meter and it shows a poor charge, is it likely this is the problem?

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Sounds like a bad power supply. They do go bad... get a new one and hook it up without installing it. If it boots your machine...you've solved your problem. That battery retains some boot info and your date/time settings.

Posted on Jan 04, 2009

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Mac g5 wont start led light blinks once every 7 sec


Hold down the power button until the computer shuts off. The press the button to restart and see what happens. There are several different ways to startup. immediately upon hearing the boot tone, press and hold the shift key to boot in safemode. If this fails as well, then you will need to boot with the install CD. This is done by immediately pressing holding the C key upon powerup

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I have an all in one Mac OS X with 2.4 GHz Intel Core 2 Duo processor. When I turn it on the screen is white with the spinning circle in the middle like its powering up but never does. It just stays...


Hello
You can check your hard drive's health at startup pressing command-s. you will see a black screen with white text. simply type "fsck -f" and press return. It should check your drive and tell you if something goes wrong with it, and repair it if possible. Then type "reboot" and press enter to test.
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1 Answer

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Check if its not overheating.

Also check your power settings

Feb 04, 2010 | Apple Power Mac G5 Desktop

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there is the single user start-up, which you were thinking of. There is also a safe-boot for macs.

To start up into Safe Mode (to Safe Boot), do this:

1. Be sure the computer is shut down.
2. Press the power button.
3. Immediately after you hear the startup tone, hold the Shift key. The Shift key should be held as soon as possible after the startup tone but not before.
4. Release the Shift key when you see the gray Apple icon and the progress indicator (looks like a spinning gear).

During startup in Mac OS X 10.4 or later, you will see "Safe Boot" on the login window, which appears even if you normally log in automatically.

During startup in Mac OS X 10.2 through 10.3.9, you will see "Safe Boot" on the Mac OS X startup screen.

To leave Safe Mode in any version of Mac OS X, restart the computer normally, without holding any keys during startup.

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try a reboot and hold the left mouse button down during the startup. You can also hold the spacebar during startup. This should force eject the drive

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In G5 always the cover should be closed properly if not it will start the fan very fast like a blower and the red leds will be on showing that the heat is over so please check that the cover is closed and locked from behind so itworks smooth and the power supply is standard or normal
u should always use genune parts with mac..
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