Bad Pool Caller

I receive this message at random intervals throughout the day.
I think it's because I have recently installed AVG but would like to be confirmed that this is the fault before buying different software.

Your mini-dump does appear to be pointing to the file: avgwfpa.sys which is related to the AVG Firewall driver: Driver Reference Table please un-install AVG for testing purposes and use the built-in Windows 8 Defender.

You also have a driver out-of-date on your system, please update this to Windows 8 64bit version(s) or un-install the driver/program if un-needed:

CLVirtualDrive.sys (2011) - CyberLink Virtual Device Driver: Driver Reference Table

-cheers