Power cycling an electronic device is a technical way of saying "resetting" it. When you
power cycle a device, you turn it off and then turn it back on again. Pretty high-tech, huh?
Usually, you should let the device sit for a couple seconds after turning it off to make sure the
memory in the device is fully cleared before turning it back on. Any electronic device can be
power cycled, but the term is frequently used with cable modems, DSL modems, and routers.
This is because small internal errors in these devices can prevent them from functioning
correctly. Resetting them typically fixes the errors and allows them to work correctly again.