All your BSODs are caused by Symantec Endpoint Driver. Suggest you to get rid of everything related to norton/symantec and see if these BSODs reoccur
Norton Removal Tool Code:
*******************************************************************************
* *
* Bugcheck Analysis *
* *
*******************************************************************************
Use !analyze -v to get detailed debugging information.
BugCheck 50, {fffff80003a2b07c, 0, fffff88006156d83, 2}
*** WARNING: Unable to verify timestamp for SRTSPL64.SYS
*** ERROR: Module load completed but symbols could not be loaded for SRTSPL64.SYS
Could not read faulting driver name
Probably caused by : SRTSPL64.SYS ( SRTSPL64+27d83 )
Followup: MachineOwner
--------- Driver Reference Table
PS, Daemon Tools is known to cause BSODs, suggest you to uninstall it.
Recommended antivirus program for Windows 7 based on stability compared to others:-
Run a full scan with both (separately) once downloaded, installed and updated.
Let us know the results