Small lines / dots over parts of screen

I've got it too! My dock items looked just like the sample image by iMPH. I've tried several of the solutions suggested by other posters. Apple needs to acknowledge that there is an issue and kindly make users aware of their options. I may just need to junk my well used iMac24 but I'd like to know for sure that this is my best option. Way too many people are reporting this issue for it to be ignored.

*Below is a list of issues my iMac24 (iMac6,1) had when I took it to the Bridge Street Apple Store in Huntsville Alabama on May 22, 2009.*

+Issues started in April.+

+Initial Symptoms include:+

+Frazzled looking icons+

+Horizontal lines in windows that disappear if window is resized+

+Lately, (last 3-4 days) symptoms include hard freeze that request TURN OFF/TURN ON+

+Sometimes “Login Window” image is broken up but still allows login.+

+I have all automatic sleep / energy saver preferences turn OFF. System still goes to sleep after a random amount of time…I leave for lunch, when I get back there is a computer login window.+

*Bridge Street Apple Store replaced the Processor Board and the Power Supply and ran diagnostics and assured me all was well. This took 3 weeks. I picked up my iMac yesterday on June 11th.*

*Today two issue are still apparent. 1) Horizontal lines in windows that disappear if window is resized.*
*2) I have all automatic sleep / energy saver preferences turn OFF. System still goes to "semi shut down" after a random amount of time…i.e. I leave for lunch, when I get back there is a login window on my screen.*

*I told the Genius that many discussion boards confirmed these issues as being linked to the NVIDIA GeForce 7300 GT video card.*

*Can anyone confirm the two issues mentions are linked to the NVIDIA??*

me too, yesterday. I still not find solution for this problem.

Yep, same problem here. Thats how it starteda few days ago. Now I can't even see the screen from all the screen artifacts.

I've noiced that if I put the iMac to sleep using the power button on the back, it sometimes wakes up fine. From the **** I went through with my white iBook, I know this is a graphics card / motherboard issue. I wish this could be fixed but i'm affraid it can't be. I'll check this thread often just in case. Good luck to you guys too.

Mine also, it started last Saturday the 24th.

I ran the Apple Hardware Test disc and it said my hardware was fine and the problem went away and ran flawlessly for about 12 hours, then I needed to restart it for another application and it reappeared and won't go away.

My iMac started displaying 1 blue vertical line and after a couple of days I now have more than 20.
I took it to my local Authorized Service Provider and they told me I have to replace the display at an outrageous cost of U$ 680 plus tax.
I found out that Apple is being sued for this problem and after reading several discussions the problem seems to apply to serial numbers that start with W8.
It is a real shame but it seems that Apple is not offering a real solution for this problem.

"It is a real shame but it seems that Apple is not offering a real solution for this problem."





iMac G5 Repair Extension Program for Video and Power Issues - Closed

I try restart my iMac by "safe mode". The Dock "small line" was normal. only mouse icon still have many "small line". why happen?

My G5 iMac 20" just started doing this TODAY!!! I hope there is a fix soon. Never had a problem before.

Well, I'm thinking this has to be logic board issue. How about the rest of you?

My iMac started doing the very same today without any warning. I really doubt that this would be a hardware problem. A bug fix is urgently needed.


/Michael

I have the exact same problem (down to the patch of dots stalking my cursor) - and the diagnostics test I ran on my computer said that it had to do with the hardware, specifically the video card. Any advise on what to do would be appreciated.

I have the same issue/problem. Two hair thin vertical lines; one 4" from the right hand edge of the display, the second a half inch from the rt. edge.
My machine serial # is also W85444ZXTAT.

Apple is aware of this? If so, what is the solution offered/ if specific serial numbers are affected then there it is a manufacturing fault.
How does one get to the related "Apple" site for a response?