Who Crashed gave this information:
On Wed 12/14/2016 7:46:45 AM GMT your computer crashed
crash dump file: C:\WINDOWS\Minidump\121416-11578-01.dmp
This was probably caused by the following module: srtsp64.sys (SRTSP64+0x109AF)
Bugcheck code: 0xC2 (0x7, 0x1200, 0x5320100, 0xFFFFC000C7A2F010)
Error: BAD_POOL_CALLER
file path: C:\WINDOWS\System32\Drivers\NSx64\1608010.00E\SRTSP64.SYS
product: AutoProtect
company: Symantec Corporation
description: Symantec AutoProtect
Bug check description: This indicates that the current thread is making a bad pool request.
This appears to be a typical software driver bug and is not likely to be caused by a hardware problem.
A third party driver was identified as the probable root cause of this system error. It is suggested you look for an update for the following driver: srtsp64.sys (Symantec AutoProtect, Symantec Corporation).
Google query: Symantec Corporation BAD_POOL_CALLER
This is on a Windows 8.1 system, fully updated except for yesterday's Patch Tuesday patches. I had just booted the computer up, and had yet to download those patches (I do not allow Windows to do so automatically.)