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The antivirus you are currently using is known and contributing to your BSOD crashes, consider uninstalling it with the Norton Removal Tool and replace with Microsoft Security Essentials at least to test.
Recommended antivirus program for Windows 7 based on stability compared to others:-

Do not start the free trial of Malware Bytes; remember to deselect that option when prompted.
Run a full scan with both (separately) once downloaded, installed and updated.
Just FYI:
Code:
fffff880`03b42028 fffff880`07ba8ab8Unable to load image \??\C:\Program Files (x86)\Common Files\Symantec Shared\EENGINE\EraserUtilRebootDrv.sys, Win32 error 0n2
*** WARNING: Unable to verify timestamp for EraserUtilRebootDrv.sys
*** ERROR: Module load completed but symbols could not be loaded for EraserUtilRebootDrv.sys
EraserUtilRebootDrv+0x2ab8
==============================================================================================================================
fffff880`03b42358 fffff880`0477f2e0Unable to load image \??\C:\ProgramData\Norton\{0C55C096-0F1D-4F28-AAA2-85EF591126E7}\NIS_19.5.1.2\Definitions\BASHDefs\20121030.002\BHDrvx64.sys, Win32 error 0n2
*** WARNING: Unable to verify timestamp for BHDrvx64.sys
*** ERROR: Module load completed but symbols could not be loaded for BHDrvx64.sys
BHDrvx64+0x1372e0
==============================================================================================================================
fffff880`03b423b8 fffff880`078c19f0Unable to load image \??\C:\Windows\system32\Drivers\SYMEVENT64x86.SYS, Win32 error 0n2
*** WARNING: Unable to verify timestamp for SYMEVENT64x86.SYS
*** ERROR: Module load completed but symbols could not be loaded for SYMEVENT64x86.SYS
SYMEVENT64x86+0x269f0 - EraserUtilRebootDrv.sys / Symantec /Norton
- BHDrvx64.sys / Symantec Heuristics Driver
- SYMEVENT64x86.SYS/ Norton Internet Security
Run the System File Checker that scans the of all protected
Windows 7 system files and replaces incorrect corrupted, changed/modified, or damaged versions with the correct versions if possible:
Run Disk Check on your hard disk for file system errors and bad sectors on it:
Hope that helps.