The process is quite simple and requires you to follow these steps. The steps are to restart your Spectrum router which should fix Spectrum Wi-Fi connected no internet.
How to resolve Wi-Fi not working?.
Unplug the router and any other devices connected to it.
Give your router at least 30 seconds to cool down.
Now, plug in all the cords back in their respective slots.
Then find the reset button on your router.
Press and hold that button for a few seconds.
It will take up to few minutes to boot your router and the small LED lights are now hopefully stable which may have been flickering earlier.
Now check any your device with internet connection to make sure it’s working.
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