Inspiron 3542 wireless and ethernet quit working Windows 7 SP1

First time forum user

Inspiron 3542, Windows 7 sp1 -- No internet connection

I have had this laptop for 2 or 3 years.  No trouble connecting to the web on Wi-fi or ethernet.

But-- one day I turned the computer on to find that both wi-fi and ethernet would not connect to the internet.  I'm using my desktop to diagnose, as I don't have a connection on the laptop.

I can't use any online help from the laptop and can't use the microsoft troubleshooters online.  The wifi on my router is working, because my phone connects.

I have downloaded the newest realtec driver and installed it.

Device manager for the Realtec PCIe FE family controller shows the device is operating properly.

I have uninstalled Norton Security and the laptop will still not connect to the web

Ideas?