Hello there...
Install this latest nForce chipset driver package to update your old drivers related:
nvmf6264 nvmf6264.sys Thu Apr 30 15:45:59 2009
nvlddmkm nvlddmkm.sys Tue Jul 14 15:50:52 2009
nvstor nvstor.sys Wed May 20 02:45:37 2009
NVIDIA DRIVERS 15.49 WHQL