There are many reasons for this problem; one of the reasons is that Windows Update failed to install or update the Network drivers, in that case, you have to update the required driver manually.

Linux provides two very useful tools for diagnosing network troubles: arp and ip neigh. $ arp Address HWtype HWaddress Flags Mask Iface fruitfly ether 7c:67:a2:cf:9f:ef CM enp0s25 Comtrend.Home ether ...

Netstat (Network Statistics) is a command-line tool for monitoring and troubleshooting computer network issues. This tool shows you all your device’s connections in as much detail as you need. With ...

Some (many?) HDMI cables can also carry Ethernet over HDMI. The main use seems to be to provide internet connection to a smart TV from a cable modem box. Currently I have an ethernet-USB adaptor ...