Hello @Facundo07 ,

Welcome to our community.

Has your router gone offline? Or completely no power?

1. If your Archer Router works properly with the LED off, you might have to check the "LED Control" settings.
2. If your Router is not powering on or cannot stay powered on, the lights on the Router are off or keep flashing all along: 
    1) Try another power socket. Ensure that the router is connected to a stable power source. 
    2) Try a different power adapter. 
    3) Hard reset the router by using a pin to press and hold the reset hole till all lights come up momentarily. 
If the above suggestions do not resolve your concerns, please contact local TP-Link support for further instructions.