Right click the “my computer” (7) or “this pc” (8) icon and select properties… then look at your device manager.
My guess is that the one in 7 looks like this but the 8 has lots of errors?
If this is a new install and if the network connection is built in to the frame| motherboard then you probably just need chipset drivers…
1. Scribble down what make, model and type (
ie. Asus, Sonicmaster, s500c) and go on a driver hunt.
2. Does the 8 have any virtual software installed like hyper-v or vm-ware as these can add | lock networks or switches.