antivirus reports that it is turned off

I have new laptop with window 7 64bit.

Originally it comes with norton internet security 2010 (30day trial version).

I fully cleaned it with all registry.

 

After that I installed symmantec antivirus (now 10.2.4.4000).

Sometimes it is very annoying me with this message:

'symmantec antivirus reports that it is turned off".

 

Even I tried to enable it in action center under control penal , it didn't work.

 

If I restart computer, then this message goes away.

I have no idea how to fix it.