Archer C6 not connecting to the internet out of the box
Hi,
I just bought this router (Archer C6), took it out of the box and just to try it, for the first time I plugged it into my existing old router. I set up the network, it got online with no problem and worked perfectly. When I got rid of my old router and went to plug Archer C6 directly to my internet provider, it didn't work anymore. When I connected to it through the browser, I reset it to the factory settings (couple of times), tried troubleshooting, but no matter how many times I restored it , restarted the router, my computer, it always shows no internet.
When I plugged my old router back in, it got online immediately.
What am I doing wrong or what can I do to get it going?
Thank you in advance for any help.