It seems you have 1 crash that has occured.
1 crash isn't something to worry about, your system takes the appropriate actions to solve it.
If you however would like to do something, please try following
Please uninstall everything of Nvidia using Display Driver Uninstaller and install new drivers from your manufacturer. Be sure the clean install box is checked and only install the Graphics driver and the PhysX driver.
*** WARNING: Unable to verify timestamp for nvlddmkm.sys
*** ERROR: Module load completed but symbols could not be loaded for nvlddmkm.sys
1: kd> lmvm nvlddmkm
start end module name
fffff800`9ba40000 fffff800`9c534000 nvlddmkm T (no symbols)
Loaded symbol image file: nvlddmkm.sys
Image path: \SystemRoot\system32\DRIVERS\nvlddmkm.sys
Image name: nvlddmkm.sys
Timestamp: Sat Oct 03 04:08:52 2015 (560F38B4)
Translations: 0000.04b0 0000.04e4 0409.04b0 0409.04e4