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thinkstation's avatar
thinkstation
Aspirant
Apr 28, 2020

Cable modem CM1000 cant connect to internet

Hello,

 

I recently purchased a CM1000 cable modem and set up Cox Gigablast on the website. they activated my account and said give it 10 minutes. The light for internet never lit up, the only light that is on is the power light and the downstream light is flashing. The cable company has sent the refresh signal several times and have rebooted my router many times. i can access the netgear genie and it says in the startup procedure acquiring downstream channel status is 0Hz and in progress, connectivity state is in progress and not synchronized, boot state is in progress, comment is "unknown". security is disabled, and comment is disabled. IP provisioning mode is in progress and comment is unknown. Cox suggested looking into netgear tech support before they send someone to check the signal at the box. I also attempted to connect at the box to eliminate any cabling issue with same result. i can ping the modem and it has no lost bytes. after several minuets of the down stream flashing it will reboot.
any help is appreciated.
Thank you.

3 Replies

  • FURRYe38's avatar
    FURRYe38
    Guru - Experienced User

    Factory reset the modem.

    Have the ISP check the signal and line quality UP to the modem. 
    Be sure there are no coax cable line splitters in the between the modem and ISP service box. 
    Be sure your using good quality RG6 coax cable up to the modem. 

    • thinkstation's avatar
      thinkstation
      Aspirant

      Hello FURRYe38,

      Thank you for the response.

      I performed a factory reset in the netgear genie and no change.
      i contacted my ISP and the only info they could give me was that my modem was "offline"  he told me to check the modem, and if the modem is good they can send a tech out to check to line up to my Cox box installed on my home.
      the line is a direct line from the cox box, no splitters installed. this is the only active line in the house routed it through the attic myself. yes i am using RG6 cabling.

      • FURRYe38's avatar
        FURRYe38
        Guru - Experienced User

        Try the reset button on the modem itself. Press for 15 seconds then release. 

        IF this fails, either take the modem back to where you got it or contact NG support for help and information. Ask about an RMA.

        vkdelta 

        Christian_R