BSOD experienced DCP_watchdog_violation similar to previously reported driver bug
http://answers.microsoft.com/en-us/windows/forum/windows8_1-update/windows-81-crashing-error-dpcwatchdogviolation/fdfc2e9b-7201-4ab4-8961-5c15bf5be048?auth=1
Networx 5.5.5 System experiencing
Windbg Crash analysis resulting from Verifier reports for networx.sys
BugCheck C4, {f6, 434, ffff9d8f52af5080, fffff802c0ba13c6}
A driver references a user-mode handle as kernel mode.