Hey, Arthur1 .
Welcome to the community! Thanks for raising this to us.
No internet light means that the modem/router's internet setting is no properly configure or it failed the auto configuration.
You may try to factory reset the modem/router by doing this the modem will re-try to perform auto-configure, if still the same you may manually configure the modem by following this article.
How to set up your TP-Link VR1600v modem .
Let us know how it will go.
Cheers!
