I have bought the Archer A5 AC1200 dual band router. I have connected my ethernet port from my wall to the internet plug in my router and turned it on and there is still no internet LED. The other LEDs are on except for that. I know the ethernet port through the wall does provide internet because I plugged it directly to my computer and it worked. So why isnt my router recognizing the internet? What should I do? Please help! 

Thank you