Guys I found a solution and worked for me
Here it is....
Install Avast Antivirus but don't restart the system
Now right clicking the avast icon on the task bar -> avast shields control -> disable until computer is restarted
Now right click on the task bar ->select task manager -> select more details (if it is only in simple view) -> select startup tab
right click on Avast! Antivisrus -> disable it
Now restart your computer
Now manually run Avast
Now again select task manager -> select more details (if it is only in simple view) -> select startup tab
right click on Avast! Antivisrus -> enable it.
So... now its done.
Check it now
Have fun