I think the graphics card has problems. I heard also that Nvidia 8000M-9000M series has a lot of issues on laptops, especially ehwn talking about overheating and lines on screen...
You were right about this. Google has been my friend again. I found many youtube videos with Sony’s as well as others with exactly the same issue. You can fix it temporarily by using a heat gun around the GPU. Some people take the MOBO out and bake it at 180deg for 10 min.
I used the heat gun and it did fix it. This is about a 3 month fix depending on how you use your computer. One guy cooked his 4 times and it’s still working.
It’s caused from poor solder used in the mid 2000’s and reheating it makes the solder re conform. It can be professionally fixed by re-flow of solder . Beware a less reputable shop could just reheat it and you would be none the wiser.
Last edited by Datman; 30 Jan 2013 at 09:47 PM..
Reason: better wording