Hi Arjun,
To start the Windows Network Diagnostics, kindly follow the instructions below:
- Press the Windows key + R on your keyboard.
- Type Control Panel.
- Select Network and Internet.
- Now select Network and Sharing Center.
- Click Troubleshoot problems.
- Select Internet Connections.
Follow the prompt to have the Troubleshooter fix it for you.
Let us know how it goes.