I faced the same problem,only workaround is 1.uninstall avast with revo
2.restart.3.install kav or kis whatever version you had.4.restart.5.now uninstall kav or kis with revobtw.6.restart.7.install avast,done!
i know the whole thing sounds stupid but it is the easiest way.cc cleaner wont help you.i know many forum members adore kaspersky but it creates weird problems n can be a real pain in the a**.
btw revo deleted my lan drivers once uninstalling kis.