Windows7 reports CAV not on

I installed the CIS x64 about a month ago & all was working fine.

Then, my Windows7 reported that the CIS Anti Virus is not on.

But the CIS said all systems are active and running & I need not do anything now!!

My Windows7 still reporting that CIS Anti Virus is not on.

I uninstall CIS and reinstall. Now, my Yahoo! AutoSync is not functioning!!!

Did you block the Yahoo! AutoSync when the Defense+ alert popups? :-\

Regards
BlackList

Sometimes, Windows Security Center stops recognizing your antivirus or firewall… So, check your system time and date and also http://windowsxp.mvps.org/repairwmi.htm