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When I turn on my powerbook g4 there is just a constant fan noise - nothing shows up on the screen it is just blank. Why is this?

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  • scholesp May 02, 2008

    hi thanks for your quick response but how do I resist the ram??

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Try by resisting the ram if not solved than the display adapter is gone

Posted on May 01, 2008

  • Rajkumar Bordoloi
    Rajkumar Bordoloi May 02, 2008

    there must be screw in the bottom or side of the laptop or latches,just open it

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1 Answer

Reset button on a powerbook g4


The Powerbook G4 power button functions like a reset button if you hold the power button in for a few seconds until the computer powers down.
  1. Hold the power button in for a few seconds (until you see the screen turn off/go black and hear the fans & hard drive stop spinning).
  2. Press the power button again to turn your computer on.
  3. If you have more trouble, you may need to boot in Safe Mode or "perform a Safe Boot":
    Press and hold down the "Shift" key immediately after you hear the start-up tone. Release the "Shift" key when the gray Apple icon appears on the screen.

May 02, 2014 | Apple 15" PowerBook G4 Aluminum 1.67 GHz...

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2006 powerbook G4. my screen will get glitchy and i can see multi color squares and lines randomly on the screen. when i move a window the pixels chase and outline my movements. any ideas?


sounds like the video card is dying. I was able to hold off on one dying by downloading a fan controller that kept the machine cooler, but with the age of the G4, it's likely damaged. Consider replacing or the fan controller.

Jan 19, 2014 | Apple G4 Computers & Internet

1 Answer

My old g4 powerbook is dead, power supply seems to be alright , all battery lights come on on the back but nothing from pressing the power button, no noises , black screen....


HI Nick, I had a similar problem with my Titanium G4 Powerbook in the past. The batterry lights showed OK, and at first glance the original Apple transparent saucer shaped power adapter seemed to be working. But then I realized that the very thin conducter wires were broken where the flexible wire meets the connector plug. I cut into the plastic insulation and soldered the wires-a very tedious exercise I might add. This worked for a few weeks, and as I was at sea on a ship, it kept me going. But before long the same problem occurred-an apparent dead computer. I solved the problem by purchasing a 65 watt power adapter from PowerbookMedic. It was dirt cheap and I haven't had a single hiccup since, and that was 3 years ago. You can always see a Genius at an Apple store, if there is one close to your home. These people are amazingly helpful.

Oct 06, 2011 | Apple PowerBook G4 Mac Notebook

1 Answer

When I power up my PowerBook G4, I hear the startup chime but the screen stays black, nothing happens!! Is my screen turned off or something?


It seems likely that the PMU (Power Management Unit) has failed and needs to be reset. There are comprehensive instructions on how to do this at the apple support site. Apple Support: PMU reset

Jan 27, 2011 | Apple PowerBook G4 Mac Notebook

1 Answer

My 15" Powerbook G4 screen is half blank - it sometimes shows lines or has some blank spots but it's always gone away. This time it seems stuck. What to do?


Hi There,

If you can get your laptop connected to an external monitor it will do the main troubleshooting for you. With it connected and set to display on the monitor, the 2 options below are pretty solid;

1. If the monitor shows your nomal desktop display without any distortion or lines, etc, then you can be fairly certain your LCD screen panel on the laptop is just wearing out.

2. If the monitor shows exactly what the laptop does, i.e., same exact problems, then it means that the Video chip on the logic board is about to fail and you'll have todecide whether to repair or upgrade to a newer machine.

I wish you the best.

Sep 08, 2010 | Apple PowerBook G4 Mac Notebook

1 Answer

G4 powerbook wont start it shows folder with flashing question mark then apple symbol


Try taking out the RAM chips and re-inserting firmly. Nothing? Try re-installing the operating system. Nothing? Try replacing the hard drive and then re-installing the operating system. Nothing? Try replacing the RAM with new higher memory RAM. Nothing? Your fu.kd and need to take the thing in for more thorough inspection by the Apple dorks.

Jul 11, 2010 | Apple PowerBook G4 Mac Notebook

1 Answer

Cant find the disc on my powerbook g4


STart up your G4 using the OS disc for leopard, but instead of reinstalling the system, go to the menu at the top of the screen and Launch Disk Utility.
You may need to remount your hard drive. The disk utitliy can do this for you. Then it should appear in the disk utillity window. Then you should be able to install the OS and away you go!

May 10, 2010 | Apple PowerBook G4 Mac Notebook

1 Answer

My apple powerbook display is just showing blank. I had turned the powerbook G4 and when I went to restart it the display would not show anything. I can hear the startup sound but nothing on the screen....


Just remove ur CMOS battery and harddisk connection from motherboard. And then try to restart it will give u a msg no boot device or OS found.. Now reboot and add the CMOS battery and harddisk on motherboard...

Apr 24, 2010 | Apple 15" PowerBook G4 Aluminum 1.67 GHz...

2 Answers

My Apple screen stays black!!!!!


If you hear the fan spinning and the screen stays blank chances are very good that the video chip on your logic board has failed. That was a common issue with many Apple laptops of that generation.
Before you give up on it however try resetting the power manager and reseating the RAM. Below is a link to instructions on how to reset the power manager on a powerbook.
http://support.apple.com/kb/HT1431

Aug 31, 2009 | Apple PowerBook G4 Mac Notebook

1 Answer

PowerBook g4 15" Screen Won't Display Anything!


your lcd probably just went out or the connecting cable just came loose(its in behind the lcd under the apple logo that lights up when you turn it on) if you open and close it frequently it will cause this

May 26, 2008 | Apple 15" PowerBook G4 Aluminum 1.67 GHz...

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