I do not believe there was any recall for that. Does the laptop work when plugged into an external monitor?
Most likely it's the display or cable. Bad cable still requires a display replacement.
GPU is integrated in with the CPU, and shares memory with the rest of the system. So, I suppose it's also possible for you to have some failing RAM too. AHT should hopefully be able to tell you more in that regard.
Have you upgraded anything recently?
It could be the GPU or the display cable. I'd suggest taking it in to Apple.
Didnt upgrade the hardware.
Think I have the same problem. Same machine and on startup. The log in screen appears eventually and after starting up full it doesn't seem to happen. I feel it happens when the components or whatever are cold. Took it to my local Apple repair place. He reset the pram thing (like did he think I hadn't already tried that!!) but it's still doing occasionally so I'll be back to him soon. Also sometimes flickers and a different pattern will show.
https://www.dropbox.com/s/dcqj3i8bju85nh0/Macbookscreen.mov?dl=0
So I am at the apple store and it shows that my hard drive is failing. So that is most likely the issue.
It's very very rare for a failing HDD to cause any kind of a graphics issue.
Totally unrelated. Having a flat tire on your car won't make your engine blow up. Same thing here.So I am at the apple store and it shows that my hard drive is failing. So that is most likely the issue.
Totally unrelated. Having a flat tire on your car won't make your engine blow up. Same thing here.
Either your LDVS cable is badly seated or broken, or your integrated GPU is failing.