We know that some of nVidia's notebook GPUs are breaking, as confirmed with Dell issuing a BIOS patch (if just turning a fan on permanently is a 'patch') to help avert any problems. Now HP has posted up a full list of all 21 if its system that may be affected by this same problem, and offered up a BIOS fix of its own.
The ranges in question include the HP Pavilion dv2000-, dv6000- and dv9000-series and the Compaq Presario V3000- and V6000- series. HP says it has "taken appropriate actions for any HP notebook products that use the known affected nVidia chips". System on the, rather long, list of possible succumbers to the issue are being covered by an extended warranty and will be replaced if required - no doubt helped by nVidia stumping up cash to cover such events.
http://www.trustedreviews.com/notebooks/news/2008/07/29/HP-Lists-nVidia-GPU-Problem-Affected-Notebooks/p1