I've had the same problem the last couple of weeks, and, after a Google search and reading other posts on what seems to be a common issue, was able to boot into Command Prompt, find the klif.sys file (in Windows/System32/Drivers), rename it to klif.old and reboot, which got me to my desktop. What I don't know is what I have to do to keep Kapersky running properly, because the klif.sys file doesn't seem to have been replaced/updated...or at least hasn't been yet.
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