why is my nighthawk x6 r7850 wireless off

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a94cobra1 wrote:

My cable modem is a Arris SurfboardSB8200.  How can this cable modem make my wifi turn off as in this picture.

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There. It wasn't that difficult was it?

That modem will not cause the problem you see. A modem/router could have been responsible. But we aren't mind readers so, without that detail, we could not rule that our of the equation.

Four days later we now have confirmation that this is a standard cable modem with no router components.

Now we can move on to the next step in the troubleshooting process.

As FURRYe38 first asked three days ago, and we have repeated on a daily basis, have you reset the router?

How do I perform a factory reset on my NETGEAR router? | Answer | NETGEAR Support

The factory reset is more a "witchcraft" move than a technically informed solution, but it does seem to fix problems, especially on the wifi front. It is also the first thing that Netgear support will recommend.

The reset does wipe out any carefully created settings, so it might be a good idea to backup your current settings before you reset.

How do I back up the configuration settings on my Orbi WiFi System? - NETGEAR Support

Then, if the problem is still there you can at least roll back to your earlier settings. Even if it does work, you could try restoring the settings. That runs the risk of bringing back the fault. But at least you will know how to revive the device. Just reset it again.