Loaded symbol image file: nvlddmkm.sys
Image path: \SystemRoot\system32\DRIVERS\nvlddmkm.sys
Image name: nvlddmkm.sys
Timestamp: Tue Oct 02 13:21:13 2012 (506B3099
Driver Name: nvd3dumx.dll,nvwgf2umx.dll,nvwgf2umx.dll,nvd3dum,nvwgf2um,nvwgf2um
Driver File Version: 9.18.0013.1090 (English)
Driver Version: 22.214.171.1240
DDI Version: 11
Driver Model: WDDM 1.1
Driver Attributes: Final Retail
Driver Date/Size: 12/29/2012 02:34:47, 18054312 bytes
Still the same TDR error too.
There's a discrepancy between the version dates on the drivers. Not totally out of the realm of reality but still suspect. Also, the video card is not responding to a reset. There's a couple of things to try.
Shutdown the system completely (power down) and re-seat the video card. While you're in there, check for a build up of dust and clean it. Check all the intake vents too and clean.
It could be that the card is over heating and shutting down. It may be a good idea to run a temperature monitor for a while and log the temps until a shutdown.
Constant TDRs could be a sign of a dieing video card too but try the above for now--They're cheap.