@ArcherC8 

Seems when this happens, and after a factory reset.   The Router is Toast

Replaced the router,  I connect and no orange light ( different brand ) 

@Jenaenae I am also having same problem. Please find the attached screen shot of Modem

@Jenaenae 

For anyone looking to resolve this still, what worked for me after getting through to a senior tech support (after getting a replacement router that had the exact same issue...) is the following:

Log into your router -> Advanced -> Network -> Internet -> Mac Clone section -> Change to "Clone Current Device MAC"

Too many hours spent trying to do other things and getting a warrantied replacement router just to find out this is the simple solution lol... anyway, hope it helps others!

@BeardofZeus Well that drops my internet again, I have to set it back to use default MAC address.

  @Jenaenae I solved my issue it was the Ethernet cord. Took me forever to figure out but I turned it off replaced cord with my old one and connected right away.

  @Jenaenae Check the power adaptor which is connected to TP-Link router. In My case TP-Link Power Adaptor pin has manufacturing fault. So I did replace with different adaptor. And it works for me and hope this will work for you.