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Forum Discussion

adamchristopher's avatar
Dec 15, 2025

Nighthawk AC750 solid orange connection after new modem install

Per the title. Got a new CM2500 modem and more my AC750 router has a solid orange connection light. Tried reboot, unplug.  Modem works, singing wrong with router apparently.  

 

Anyone else have this issue when switching modems?  None of the videos seen to help.

4 Replies

  • FURRYe38's avatar
    FURRYe38
    Guru - Experienced User

    What model NG router is this? AC750 isn't a router model #. 

    Have you powered OFF both modem and router for 30 seconds then back ON? 

     

    Might look into a newer generation router. Any AC750 series is fairly old now days. May not be a good router to use. 

      • FURRYe38's avatar
        FURRYe38
        Guru - Experienced User

        Possible that older model doesn't support 1Gb ethernet speeds, so maybe the modem is reporting the slower speed as red. 100Mpbs? 

  • plemans's avatar
    plemans
    Guru - Experienced User

    That isn't a model. Maybe you mean the R6020? if so, its way past time to upgrade that router. 

    Its old, slow, and not even gigabit. 

    In the mean time, the CM2500 has 2x ethernet ports but only 1 can be used at once for most ISPs. If you have anything else connected to it, shut both the modem and router down. Disconnect all ethernet from the cm2500. Then power it on, give it 3-5 minutes, and then power on the router. give it a couple minutes. Don't connect anything else to the modem.