Firstly, connect a PC or laptop to your router via Ethernet cable to eliminate WiFi issues.
Next, open at least two command prompts by searching for CMD in the start menu.
Ping a different web site in each prompt e.g. “Ping bbc.co.uk –t” in one, and “Ping google.co.za-t” in another.
Be aware that not all websites will respond to pings and some will drop packets to limit continuous requests.
Compare the results of the two windows. If you have a network or connection issue, then the responses in each of the command responses will increase or drop out at the same time.