For what its worth, the DV2000 series of HP laptops have a common issue
with the video chip in these. I have reflowed many motherboards to
correct the connection problems, but the DV2000's do not seem to
holdup. I have also reflowed a lot of DV6000 and DV9000 motherboards,
and I can get them to stay fixed if I improve the heat sink contact on
the Nvidia chip, but the DV2000 have come back to me repeatedly.

This issue may or may not be related to your issue. I don't know.