If you can’t connect to the internet and you know the problem is as simple as one of your devices being disconnected along the line which of the following would you use to find out which? You also don’t know the gateways or ips.
ping? Tracert? Pathping? View network map in the network and sharing center?
DHCP or Static IP?
DHCP: 1)ipconfig /all 2) ping “default gateway”
If no luck, check your dns and/or try to connect with a website directly with the IP address.