Yeah, my DV7-2270us has the ATI videocard (Radeon HD4650 1gb vram onboard), and supposedly the problem is more prevalent among DV's with a nVidia card. But mine still has something going on. It was flaking out bigtime and then eventually stopped recognizing half of it's ram. 4gb installed, and eventually it started indicating only 2gb. As soon as it started showing only 2gb installed it went back to being stable. A sodimm must have died, so I bought a new set of 2x2gb. Stable for about a week then the same bsod's and black screens started returning but much fewer and farther between. When messing with the ram modules I noticed that the 2nd ram socket on the motherboard that sits stepped under the 1st one, the module went in much looser feeling than the module in the first socket went in. I have some Stabilant 22 on hand and put some on the contacts for the modules and re-installed. Stable for a few days but lately some random bsod's and black screen's are showing up.
So, I'm not sure what's going south inside the thing. If it was solder on the board somewhere it would seem that changing out the sodimms with new ones should not have made any difference. Unless it could be solder in the pathway to the memory sockets going bad and there exists a relationship to the amount of resistance encountered at the SODIMM-to-socket contacts that triggers conductivity faults in the failing solder.
I'll probably keep using it until the errors become too frequent, then I'll need to get something else.