Apple Macbook Pro Screen Problem - NVIDIA GeForce 8600M GT Failure

Gadgets are cool until they go wrong like my Apple Mac laptop has! I have an Apple Macbook Pro laptop screen display which has gone all very strange - it displays diagonal multi coloured lines across the whole screen and totally freezes. I've done some research and think it's to do with the NVIDIA GeForce 8600M GT Failure.

Here is a picture of the Apple Macbook Pro screen problem:

What I have tried:
I have restarted the laptop numerous times and reset PRAM but still no good.

If anybody has any idea what could be the cause of this and how to fix it I would greatly appreciate it and if your answer fixes it, I will send you money via Paypal as a thank you.


Anonymous said...

Depending on what kind of MBP you have, you could have a faulty Nvidia GPU. Apple is aware of this problem, see here. I was having separate issues when Keat83 mentioned this to me. Hope this helps.

Anonymous said...

Well, I can tell you how I'd troubleshoot it.

Boot it off a working restore of OSX to see if there's a software problem.

Connect it to an external display, and see if that has the same problems.

If an external display works, look into replacing the laptop's LCD.

If an external display doesn't work, it's probably either the CPU or the RAM. Run the hardware test that came with it, or download one off the Internet and burn it to a CD. Swap out the RAM, if possible, to see if there's any difference.

I'd fear it is the mobo or the CPU, though, particularly if it's freezing.

Anonymous said...

Great advice.

Another trick is to take a screen shot (Command-Shift-3). If the artifacts appear in the PNG file, then it's an issue with the video hardware on the motherboard and not the display.

Depending on the MacBook Pro model, one might be able to switch between video chips. For instance, in my MacBook Pro, I have both an NVIDIA GeForce 9400M and 9600M GT. One can switch between them in 'System Preferences' > 'Energy Saver' > 'Graphics:'. It might be interesting to see if only one has an issue.

I suspect either overheating (blow that dirty thing out with canned air) or a hardware failure that can be diagnosed with the hardware test CD or at an Apple Store.

Anonymous said...

Same Problem here:

Anonymous said...

Again, same problem:

Anonymous said...

Apple discussion on this very problem:

Apple offers MacBook Pro Nvidia graphics repair said...

Apple offers MacBook Pro Nvidia graphics repair

Anonymous said...

update the drivers...if that fails to help anything it's almost 100% positive it is the GPU going bad (the video card). The problem is heat, macbooks in general have very poor air circulation, plus if playing high intensity games or any video rendering, your GPU, CPU, RAM, hard drive and mobo chipset will heat up. If they are constantly ran at very high temperatures, they are prone to a much shorter life span and quick failures without much warning. If anything, apple will simply replace the video card, but knowing them, they'll charge you out the a** for it

Anonymous said...

I had the same problem with screen and at first thought it couldn't be the graphic card since my external monitor works fine. But after a few weeks, my computer went totally dead. Took it to Apple store and after some diagnostic tests, it turned out the graphic test failed, so that needed to be replaced along with logic board. You can't replace one without the other. So Nvidia graphic card is faulty and will damage your logic board if you don't have it fixed soon. Apple replaced mine for free due to faulty Nvidia graphic card even though my mbp is already out of warranty. Hope this helps.

Adam said...

not sure if this is the same problem you all were having but take a look at what my screen is doing.

i was able to plug it into an external monitor and the image was crystal clear. I am just worried that in time it will destroy my logic board. unfortunately i have just arrived in kenya yesterday, and i will be here for the next two months and i need my computer to do my work here.

any suggestions?!?!?1

cool gadgets said...

I really think it's a harware problem. Apple should really replace the piece that's not working properly.

Anonymous said...

bring it to apple store to be replaced with a new logic board. it is free.