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Forum Discussion
CM 400 modem doesn’t connect to internet despite spectrum saying everything is ok on their end
I have a CM 400 modem that was moved to a new address today connected to a nighthawk ac1300. They were both completely functional at my previous address but now I am not able to connect to
the internet. I’ve tried the following: 1) Called spectrum and assured that the internet is working on their end. 2) Connected a laptop via Ethernet to the modem to assure that it’s working. It doesn’t load any webpages despite being assured by spectrum that everything is ok on their end. 3) Rebooted the modem for 20 minutes and disconnected the coaxial cable. 4) Tried to login to the modem to see if I can configure the modem settings. It doesn’t work. 5) Tried to connect my modem to my router directly and access the internet, I didn’t expect this to work since i can’t connect through a hardwire Ethernet connection.
I’m stumped and might just go back to an old modem/router combo.
the internet. I’ve tried the following: 1) Called spectrum and assured that the internet is working on their end. 2) Connected a laptop via Ethernet to the modem to assure that it’s working. It doesn’t load any webpages despite being assured by spectrum that everything is ok on their end. 3) Rebooted the modem for 20 minutes and disconnected the coaxial cable. 4) Tried to login to the modem to see if I can configure the modem settings. It doesn’t work. 5) Tried to connect my modem to my router directly and access the internet, I didn’t expect this to work since i can’t connect through a hardwire Ethernet connection.
I’m stumped and might just go back to an old modem/router combo.
2 Replies
Try a different wired PC?
Power OFF both modem and router for 1 minute. Then back ON with the modem first, then router.
Be sure your PCs networking is set up for Auto Obtain IP addressing.
Ensure your using good working quality LAN cables. Swap out. CAT6 is recommended.
Luidq wrote:
I have a CM 400 modem that was moved to a new address today connected to a nighthawk ac1300. They were both completely functional at my previous address but now I am not able to connect to
the internet. I’ve tried the following: 1) Called spectrum and assured that the internet is working on their end. 2) Connected a laptop via Ethernet to the modem to assure that it’s working. It doesn’t load any webpages despite being assured by spectrum that everything is ok on their end. 3) Rebooted the modem for 20 minutes and disconnected the coaxial cable. 4) Tried to login to the modem to see if I can configure the modem settings. It doesn’t work. 5) Tried to connect my modem to my router directly and access the internet, I didn’t expect this to work since i can’t connect through a hardwire Ethernet connection.
I’m stumped and might just go back to an old modem/router combo.> [...] 2) Connected a laptop via Ethernet to the modem to assure that
> it's working. [...]What's the IP address of your (unspecified) "a laptop" when you do
this?> [...] 4) Tried to login to the modem to see if I can configure the
> modem settings. It doesn't work. [...]"Tried" how? Which kind of "doesn't work" is this? "Tried" or
"doesn't work" is not a useful problem description. It does not say
what you did. It does not say what happened when you did it. As usual,
showing actual actions with their actual results (error messages, LED
indicators, ...) can be more helpful than vague descriptions or
interpretations.Visit http://netgear.com/support , put in your model number, and look
for Documentation. Get the User Manual. Read. Look for
"Troubleshoot".
