Poor-quality cable signals and temporary service interruptions are two major reasons that cable modems disconnect. It may be necessary for a qualified technician from the cable company to address modem disconnection problems.

Power-cycling a modem can potentially restore service. This procedure involves unplugging the modem from the electrical outlet, waiting for a short time, and then plugging it back into the outlet.

If Internet connectivity is still an issue even after power-cycling the modem, calling the cable company is a logical next step. The customer service representative can check for outages and perform diagnostic tests.

Low signal strength can cause Internet connectivity issues with cable modems. Cable technicians can identify and fix these issues by replacing cable wires and connectors as necessary.