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scifi3dzoo's avatar
scifi3dzoo
Tutor
Jul 11, 2019
Solved

Nighthawk C7000 WiFi router/modem won't connect to Spectrum... no signal detected.

Running fine on Xfinity.  Packed it up, moved, got Spectrum svc  and they said it won't connect.  They put their modem on it works.  WTH.  Only thing I can think of is something I have to setup in AD...
  • FURRYe38's avatar
    FURRYe38
    Jul 17, 2019

    Nothing to modems. ALL FW is handled by ISPs thats given to them by NG. ISP test and ensure the FW works on there systems and doesn't break anything. 

     

    If you have a friend, family member that you could take the modem to  and see if it works on there cable ISP service, see if the problem follows. If not, then you'll know. Again, if the modem worked with your prior ISP before moving and now it doesn't, I suspect something with the new ISP. 

FURRYe38's avatar
FURRYe38
Guru - Experienced User
Jul 11, 2019
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Try a factory reset on the modem while you have the ISP tech online. If it's supported on there system, and if it worked on the prior ISPs system, then the modem is good and it should work with Spectrum. 

 

Something to have your ISP review with you to see if there is any issues. 

Be sure ISP checks signal line quality and levels up to the modem.

Be sure there are no coax cable line splitters inbetween the modem and ISP service box. 

  • scifi3dzoo's avatar
    scifi3dzoo
    Tutor
    Jul 13, 2019
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    RESET did nothing.  I'm gonna just complain to BBB or something.  It's a 2 year old modem.  I know they don't want people using support on their dime to ask setup questions but I have a HW issue I think.  And I should be able to mail it in for repairs with all the trouble, and pay $50 or whatever it is just to get warranty/repair set up.  I'm done with Netgear after this.

    • FURRYe38's avatar
      FURRYe38
      Guru - Experienced User
      Jul 14, 2019
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      It's not a NG problem if the modem doesn't work or is not getting fully connected to the ISP. IF the ISP supports the modem, then it's up to the ISP to check and geting associated. If it worked with your prior ISP then the modem is probably good. Should blame NG for something they can't effect with ISPs. 

       

      • scifi3dzoo's avatar
        scifi3dzoo
        Tutor
        Jul 14, 2019
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        It is supported. And I think every ISP supports that modem. We tried everything it's just not detecting a signal