One of the dumps pointed at nVidia's driver, and another one cited 'memory corruption'.
Please download OCCT and stress test your graphic card. Also run memtest for at least 8 passes to check your system's RAM, preferably run it on individual sticks.
The date stamp on crashed driver is of March 2010, uninstall this driver, run Driver Sweeper or Driver Cleaner Pro to clean out any remaining files, then download latest WHQL driver and install it. Regards