Cable modems can lose their connection for two different reasons: power loss or signal loss. Each one can be prevented in different ways but the fixes are similar. Additionally, personally-owned equipment can block a connection inadvertently. By evaluating the situation, there are easy ways to get back up and running.

Power Issues

If a modem loses power often, the fixes are simple. The first thing is ensure the modem is connected to an outlet that is not overloaded by many devices. Additionally if the outlet is on an overloaded circuit, that can also cause power loss. Changing outlets is the fastest fix but the modem can be connected to a backup battery. This would ensure power is regulated from spikes and will stay up with battery power.

Signal Issues

The signal that comes into cable modems must be within a certain range in order to function. The signal constantly fluctuates but as long as it does not go too high or too low, the modem will operate with no issues. The signal to a modem can go out due to a loss of signal to the house, a signal that is too weak or too strong, or finally due to faulty equipment blocking the signal.

The best way to determine if a splitter is causing a signal loss is to replace it with a new digital splitter. These have circuitry in them, allowing them to split a modem signal. Regular splitters from the store will not work and correct ones should be obtained from the cable company. If replacing the splitter fixes it, the problem should be gone.

If the signal is coming in too high or low, a splitter may aggravate the issue. In this case, bypassing the splitter with the modem is the best step to take. If it works without the splitter (after replacing it) then the signal strength is an issue. More than likely a technician appointment would be needed by the cable company.

Equipment Issues

Sometimes an internet connection can be lost due to equipment attached to the modem. If the modem is functioning properly but the computer cannot get online, more than likely there is a piece of hardware blocking the connection. In most cases the issue is a router that's lost its sync with the modem. To restore the connection simply power off both devices and then power them back on with the modem first and then the router 30 seconds later.

If there is no router in the house or the reset above hasn't fixed it, the issue would then rest on the computer itself. Most security software auto-updates and can cause a loss of connection. Additionally, a virus or infection of the computer can cause it to lose internet. A reboot of the machine should be tried first, followed by a full system scan if needed. All cable modems have light patterns on them to indicate what they are doing.

By learning these patterns and trying some of these simple troubleshooting steps, there is a large chance a loss of internet can be restored in a matter of minutes. This is a much better option than waiting on hold for a long time and possibly scheduling unnecessary appointments with the cable company. Finally, these steps can help ensure the connection has as high of an uptime as possible