some time my NIS exit

Hi ,

 

Some times my NIS 2013 , exit and i can not run it and view icon at task manager  .

 

this problem Approximately do any day . and i force reset my computer .

 

i scan my system with NPE but does not detecte virus .

 

i do not know why some times my NIS exit .

 

my NIS and OS ( win 7 32 bit ) are with latest update .

my java and Adobe are with latest update .

 

 

Thank you

Best Regards ,

Amir