I never installed Kasersky Anti-Virus. Why does Microsoft say I have a problem with Kaspersky Anti-V

I have gotten the BSOD several times, apparently not related to anything I am doing.  The reason for the problem is shown as "Kaspersky Anti-Virus has stopped working."  I never installed Kaspersky Anti-Virus, but I ran Kaspersky's all product removal

tool anyway.  I am using Microsoft Security Essentials and it is up to date.  My computer still crashes every few days.  I have seen that a few other people with this problem, but I have not seen any effective solutions.  Is this a virus?  How can I solve

this problem.

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