Sparklight Internet Not Working — Modem & Router Fixes

Applies to: Sparklight, formerly Cable One (also formerly CableAmerica, Fidelity, Hargray, ValuNet in some areas)

If you joined Sparklight through an acquired regional provider — CableAmerica, Fidelity, Hargray, or ValuNet — some account tools may not be fully integrated yet on Sparklight's system, which is worth knowing if something in your online account looks incomplete or out of date.

1. Check power and connections

1. Confirm the modem and router are both receiving power, and that their outlets aren't connected to a switch that could be turned off.
2. Check that the Ethernet cable between your modem and router (if separate devices) hasn't come loose.

2. Did you move your modem or router to a different cable outlet?

This is a genuinely important, specific gotcha worth checking first: Sparklight's high-speed service is configured to work on the exact coaxial outlet it was originally installed on. If you've relocated your equipment to a different outlet in your home — even one that looks identical — it may simply not work there. Moving it back to the original installation outlet resolves this immediately if that's the cause.

3. Check for a splitter between the wall outlet and your modem

A splitter between the wall and your modem can degrade signal quality enough to cause connection problems, especially if it's an older or lower-quality splitter, or if there are multiple splitters in the line. Removing an unnecessary splitter, or connecting your modem directly to the primary outlet, is worth testing if you're not sure whether one is in the path.

4. One device won't connect while others work fine

• Check which WiFi frequency your modem is using — Sparklight-provided modems are typically dual-band, automatically choosing between 2.4GHz and 5GHz. If the affected device only supports one band, try connecting it to that specific network directly if your modem broadcasts each band separately.
• If you recently moved the affected device to a new location in the house, interference from other electronics or walls between it and the router could be the cause rather than anything account-related.

5. Slow speeds specifically

1. Check Sparklight's Outage Check page or call in to check for a known service interruption in your area first.
2. Limit bandwidth-heavy activity (large downloads, 4K streaming, multiple simultaneous devices) temporarily to see if speeds improve — this points to local bandwidth demand rather than a network-wide issue.
3. Reboot the modem: unplug it, wait, then plug back in — followed by rebooting the router separately if speeds are still an issue afterward.

6. Reboot procedure

1. Unplug the router's power for about 5 seconds, then plug it back in — it should take roughly 30 seconds to fully reboot.
2. If rebooting the router alone doesn't help, reboot the modem the same way and give it a few minutes before testing.

FAQ