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Forum Discussion
Nighthawk CM1000v2 Low Speed Suddenly
Earlier in the week, I had a day where my internet was suddenly going in and out throughout the day while I was attempting to work. Xfinity didn’t have any outages and couldn’t connect to my Nighthawk CM1000v2 modem. I followed troubleshoot guides of unplugging, swapping wires, tightening wires. Nothing seemed to work and periodically throughout the day it would continue to just go out. The next day it no longer went out, but now I’m getting extremely slow speeds. Before I would get around 250-300 download and now I’m get 35 wired and 15 on WiFi. I can do basic things like watch Netflix and work, but I can’t do things like play video games online. It’s really frustrating and xfinity just keeps saying it’s an issue with Netgear. What other steps can I take to return my services to normal? Is it just because the modem is old now and I have to spend money to replace it?
Modem is plugged directly into wall. There wasn’t any storms or power surges that occurred leading up to it malfunctioning.
Modem is plugged directly into wall. There wasn’t any storms or power surges that occurred leading up to it malfunctioning.
1 Reply
Has a power off for 1 minute then back ON with the ISP modem and router been performed since last update?
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.Has a factory reset and setup from scratch been performed? A complete pull of the power adapters for a period of time after the factory reset and setup with a wired PC and web browser.
Please post a copy and paste of the modems connection status and event log page.
https://kb.netgear.com/30007/How-do-I-obtain-the-cable-connection-information-from-a-NETGEAR-cable-modem-modem-router
https://kb.netgear.com/30008/How-do-I-view-or-clear-the-event-logs-on-my-NETGEAR-cable-modem-or-modem-routerBe sure your using a good quality LAN cable between the modem and router. CAT6 is recommended.
What is the brand and model of the host wifi router connected to the modem?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.
Start with removing any amplifiers, signal attenuators, or splitters from the coax.
From there check the line for kinks, damage, moisture in the line.
Check the connectors for improperly made ends, foil touching the copper coax line, loose connections, bad/old/cheap connectors, or corroded connections. Replace them if you do.
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
https://www.duckware.com/tech/solving-intermittent-cable-modem-issues.html
https://highspeed.tips/docsis-events/
