Question about Apple Power Mac G5 Desktop

1 Answer

G5 Desktop icons, cursor: horizontal lines

I have 2 problems with my G5 Dual 1.8 GHz PowerPc -1GB DDR SDRAM, running 10.4.10. The first problem is that suddenly on the desktop all the icons and the dock have 3 or 4 horizontal lines of black dashes and dotted lines around each icon and 2 of these under the mouse cursor. It is as though they are part of the icons and the cursor - they move with them. I have done some online searching and some say it may be the video card, some the logic board. I think I have ruled out a software problem because I tried to login under another user account and the "ghosting" was still there. I have rebooted a few times - no change. I have run applejack with no change. The only change was when I booted up in safe boot, the ghosting went away. My other problem is that I tried to run the Apple Hardware Test from the disk, but I got a message that said Apple Hardware Test can not be used for this G5. What's that! Can someone help me? Thanks, Kim

Posted by on

  • digerati Mar 17, 2009

    G5 Power Mac (late 2004) tower: I also have dark lines and hash marks that remind me of bar codes, around System items like cursor, dock icons, and anything that is associated with OS X. I also have display problems with images in System apps. In other words, a photo opened in Preview or a video file played in iTunes has little blocks of color all over it, but a photo opened in Photoshop CS3 or embedded in page layout apps like Quark Xpress does not. I did research and found the best video card replacement for this G5 (which is an older dual but not a dual intel) is the ATI Radeon 9800, 256mb dvi/vga/s-video for powermac G5 ($250-350 depending on where you buy it). HOWEVER, I too have heard it could be the motherboard going out, which would cost a lot more!!! Is there a way to find out which is the problem, the video card or the motherboard? I've zapped the Pram and restarted, recalibrated, all the usual stuff, started in safeboot, etc. but the problem remains. Thanks for any help. Barb at

  • robot999 Apr 07, 2009

    Just started happening today. Can anyone assist me in identifying the proper replacement card? Thx.
    Model Name: Power Mac G5
    Model Identifier: PowerMac7,3
    Processor Name: PowerPC G5 (3.0)
    Processor Speed: 2 GHz
    Number Of CPUs: 2
    L2 Cache (per CPU): 512 KB
    Memory: 2 GB
    Bus Speed: 1 GHz
    Boot ROM Version: 5.1.8f7
    Serial Number: G84303QXQPR

    Chipset Model: ATY,R360
    Type: Display
    Bus: AGP
    Slot: SLOT-1
    VRAM (Total): 256 MB
    Vendor: ATI (0x1002)
    Device ID: 0x4e48
    Revision ID: 0x0000
    ROM Revision: 113-A14404-118


1 Answer

  • Level 1:

    An expert who has achieved level 1.


    An expert that got 5 achievements.


    An expert whose answer got voted for 20 times.


    An expert who has answered 20 questions.

  • Contributor
  • 55 Answers

Hey Kim,

You most definitely have a video card problem, I have seen it many times. The AHT is different for each Macintosh, which version are you using? let me know the serial number of your computer and the version and I will tell you the correct AHT to use.

Posted on Feb 22, 2009

1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

My G5 freezes constantly. What can I do.

Try running Apple Hardware Test on the machine (it's one of the discs that came with the machine.) Also, if it's freezing by showing the spinning rainbow cursor (beachballing) you may have a failing hard drive. That wouldn't be uncommon for how old the machine is.

Feb 24, 2015 | Apple PowerMac G5 Dual Mac Desktop

1 Answer

Old 2005 apple mac upgrade

Leopard requirements/10.5.x...
* Mac computer with an Intel, PowerPC G5, or PowerPC G4 (867MHz or faster) processor
minimum system requirements
* 512MB of memory (I say 1.5GB for PPC at least, 2-3GB minimum for IntelMacs)
* DVD drive for installation
* 9GB of available disk space (I say 30GB at least)
Classic/OS9 Apps no longer supported.

$45.00 on - You can't do Snow Leopard.

Jul 22, 2013 | Apple iMac G5 Desktop

1 Answer

I Recently bought an apple mac g5 from auction, it starts up, makes the charm noise, and a small light comes on, then it goes to the start up screen and has horizontal lines all the way down the screen, i...

This could be one of two issues: 1. Bad processor which is what I suspect is most likely 2. Bad video card; less likely since you'd still be able to click on icons etc.

Dec 05, 2010 | Apple iMac G5 Desktop

2 Answers

Install Snow Leopard on a macmini Power-PC ?

If it is a G4 PowerPC processor No
If it is an Intel Processor Yes

Jan 06, 2010 | Apple Power Mac G5 Desktop

1 Answer

My Apple IMac G5, 2GHz 512 MD DDR SDRAM (Sr.No. W85399C8SDY)developed a couple of white lines on the screen a few months ago. These have now spread to cover almost the entire LCD display. What is the...

Hi, it seems like a motherboard problem (hardware), you will probably need to bring the mac to an AASP. Before, you can try the Apple Hardware Test, or resetting the PRAM (Hold the cmd, alt, p and r keys)

May 22, 2009 | Apple iMac G5 Desktop

1 Answer

Dual 2.5 GHz PowerPC G5 sound output

This is just how it works. The headphone jack on Macs is dual-purpose. If you plug in a mini-Toslink cable (like you have) it automatically sends the sound through that & increases the computer's volume to maximum. When you unplug the Toslink, the laser will still shine for a brief moment (but then it does go off). So, there is no way to keep the Toslink plugged-in AND utilize the built-in audio at the same time.

Mar 27, 2009 | Apple Power Mac G5 Desktop

1 Answer

Grid surrounding cursor and desktop icons

You have accidentally enabled "Universal Access"
Open System Preferences from either the dock or the pull down menu under the Apple in the upper left hand corner of your screen.

In System Preferences the 4th line down should have icons for "System" one of those icons (usually the right most) will be a blue circle with a person in it. This is "Universal Access"

Open Universal access and turn voice over and zoom off.

Feb 28, 2009 | Apple iMac G5 Desktop

1 Answer

Can't reinstall

uninstall the antivirus and unused softwares and then try

Feb 20, 2008 | Apple Power Mac G5 Desktop

Not finding what you are looking for?
Apple Power Mac G5 Desktop Logo

Related Topics:

656 people viewed this question

Ask a Question

Usually answered in minutes!

Top Apple Mac Desktops Experts

Lawrence Oravetz

Level 3 Expert

7928 Answers

Cosma Papouis
Cosma Papouis

Level 3 Expert

404 Answers

Brad Brown

Level 3 Expert

13732 Answers

Are you an Apple Mac Desktop Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides