Provide info to get support

simply complaining "it doesn't work" won't bring in much help.

provide info like, what happens if I

ping www.google.com
ping 192.168..0.1

whether you can get network in another OS? (to exclude hardware failures)

Look buddy, "doesn't work" is an ambiguous statement. Does it sit on the couch all day long? Does it procrastinate doing the dishes? Does it beg on the street for change? Please be specific! Define 'it' and what it isn't doing. Give us more details so we can help you without needing to ask basic questions like "what's the error message".