NETGEAR is aware of a growing number of phone and online scams. To learn how to stay safe click here.
Forum Discussion
Netgear modem CM500 ethernet problem
My Netgear modem CM500 worked two days ago. When I tried to use it in an apartment yesterday, it did not work.The ethernet light was orange with no internet service when the modem is connected to a wireless router or to a laptop. All other four lights on the modem were solid green. Comcast confirmed that they could see the modem. I brought it back home and connected to a coax port with Comcast service. I have the same problem. Comcast could see the modem. But when the modem is connected to wireless router or a PC, there is still no internet service. Does anyone have idea about what happened after I moved the modem?
3 Replies
weihe9 wrote:
My Netgear modem CM500 worked two days ago. When I tried to use it in an apartment yesterday, it did not work.The ethernet light was orange with no internet service when the modem is connected to a wireless router or to a laptop.
Can you connect the laptop to the modem without using the router?
This would check that the modem is working properly. Then you can start working out why the (unknown) router does not connect to the Internet through the modem.
Remember, when connecting to the Internet you have to do things in the right order:
Be sure to restart your network in this sequence:
- Turn off and unplug modem.
- Turn off router and computers.
- Plug in and turn on modem. Wait 2 minutes for it to connect.
- Turn on the router and wait 2 minutes for it to connect.
- Turn on computers and rest of network.
While many questions about routers are generic and could be answered anywhere, some things need specialist knowledge. Your question is about a cable modem.
You might get more help, and find earlier questions and answers specific to your device, in the appropriate section for your hardware. That's probably here:
Cable Modems & Routers
I will ask the Netgear moderator to move your message.
In the meantime you could visit the support pages:
Support | NETGEAR
Feed in your model number and check the documentation for your hardware. Look at the label on the device for the model number.
You may have done this already. I can't tell from your message.
I mention it because Netgear stopped supplying printed manuals and CD versions some years ago and people sometimes miss the downloads.Thank you, Mike, for your message. I'll check out the documents you mentioned.
A laptop was connected to the modem directly without a router. There was no internet service either.
Please post a copy and paste of the modems connection status page.
Have the ISP check the signal and line quality UP to the modem. Be sure the ISP provisions the modem correctly.
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.
Be sure to power OFF the modem for 1 minute then back ON.
https://community.netgear.com/t5/Cable-Modems-Routers/General-info-and-Troubleshooting-for-Cable-Modems/m-p/1530376#M12853
https://kb.netgear.com/24311/Power-level-guidelines-for-a-NETGEAR-cable-modem-router?article=24311
https://www.duckware.com/tech/solving-intermittent-cable-modem-issues.html
