Bluescreen PFN-LIST corrupt (2nd time in 5 hrs) on 7

[garez1]

I have never had the blue screen problem before, so this comes to shock to me. I wish I knew how to identify what caused the shutdown myself, but I don't have much computer knowledge regarding technical issues, which is why I am here asking for your help.

So, it is with great appreciation that I ask if somebody could help me identify what is causing these crashes.

The dump files are attached in the .zip file.
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I have an ASUS laptop Intel Dual-Core T4400 @ 2.2GHz; 3GB RAM; 320GB HDD; Windows 7 Home Premium.

 

[yowanvista]

BSOD caused by K9 Web Protection, please remove that software

BugCheck 50, {fffffa8002e54fff, 1, fffff88002e7cf99, 0}

Unable to load image \SystemRoot\system32\drivers\bckd.sys, Win32 error 0n2
*** WARNING: Unable to verify timestamp for bckd.sys
*** ERROR: Module load completed but symbols could not be loaded for bckd.sys

Could not read faulting driver name
Probably caused by : bckd.sys ( bckd+ef99 )

 

[garez1]

Thank you so much!
I did so.

I had a feeling that was it because I had installed it two days prior to the crash, so it makes sense.

Again, thanks.