Activate/Genuine problems after 3 years

Hi, I have started having activation issues and not genuine warnings after nearly 3 years of using my PC. Here is my current situation. *When I am connected to the internet, * Computer > Properties shows "Windows Activated" and the Genuine MS logo. MGADIAG shows "License Status: Licensed" *When I am disconnected from the internet, * Computer > Properties shows "3 days until automatic...