Repairing The Display Problem in HP dv2000/dv6000 series
PROBLEM
Last week when I turned on my laptop HP dv2750, there were multiple screens appearing on the display instead of one screen, and some times the screen even didn’t appear. I reinstalled and updated the nvidia drivers (as it has nvidia 8400GM) assuming something might be wrong with the drivers, but when the notebook restarted the multiple screens appeared right from the time it restarted, i.e. there were six boot screens, instead of one. I logged on to the HP website and updated my bios, but the problem didn’t solve. I ran the system restore, but that was also useless. I searched for the problem on the net and found that there is a die-packaging manufacturing defect in nvidia GPU of G84 and G86 which was officially announced by NVIDIA. These nvidia GPU are in most of dv2000/dv6000 series of HP pavilion laptops
Solution:
My laptop’s warranty expired last and was also not covered by HP Limited Warranty Service Enhancement. I talked to HP, they confirmed it as a hardware malfunctioning of nvidia GPU (Graphics Processing Unit), but refused to repair it free of cost (estimated cost by HP was $300+shipping charges). I being a student couldn’t afford that much. As I was out off options so I decided to get it repaired locally.
The local techinian immediately identified the problem. Actually the problem is in the Ball Grid Array (BGA) of Nvidia GPU. With the passage of time (approximately 1 year), the Ball Grid Array Soldering of the GPU gets damaged due to heating. When it gets damaged, some pins of the GPU loses the contact with the motherboard, and hence displays nothing. The local technician told that there are two methods to repair it
