BSOD, multiple different crash messages

Your nVidia driver is causing a problem.

Code:

fffff800`00b9c508  fffff880`0f0698e6Unable to load image \SystemRoot\system32\DRIVERS\nvlddmkm.sys, Win32 error 0n2
*** WARNING: Unable to verify timestamp for nvlddmkm.sys
*** ERROR: Module load completed but symbols could not be loaded for nvlddmkm.sys
 nvlddmkm+0x68e6

Try updating to 337.88 here, if this remoains unstable download this earlier version from here and follow NVIDIA Drivers - Avoid Problems for the cleanest possible install.

Your Killer e2200 PCI-E Gigabit Ethernet Controller driver is also causing problems.

Code:

0: kd> lmvm e22w7x64
start             end                 module name
fffff880`04a56000 fffff880`04a7d000   e22w7x64 T (no symbols)           
    Loaded symbol image file: e22w7x64.sys
    Image path: \SystemRoot\system32\DRIVERS\e22w7x64.sys
    Image name: e22w7x64.sys
    Timestamp:        Wed Mar 20 21:35:41 2013 (514A2BAD)
    CheckSum:         00031967
    ImageSize:        00027000
    Translations:     0000.04b0 0000.04e4 0409.04b0 0409.04e4

Download this later version here.

Avast is also causing a problem.

Code:

fffff880`0c4e09d8  fffff880`0191cc19Unable to load image \??\C:\Windows\system32\drivers\aswSnx.sys, Win32 error 0n2
*** WARNING: Unable to verify timestamp for aswSnx.sys
*** ERROR: Module load completed but symbols could not be loaded for aswSnx.sys
 aswSnx+0x27c19

Uninstall Avast and install MS Security Essentials and MalwareBytes.

   Note

Make sure you uncheck the 'Enable Free Trial' box when installing.