Question

A technician is servicing a laptop that works properly when the power adapter is plugged in. Even though the battery icon shows that the battery is fully charged, when the laptop is unplugged, the laptop immediately shuts down.

Answer 1

Answer:

The laptop either does not have a battery or the battery no longer holds any charge, thus shutting down instantly.

Explanation:

Most laptops will first try to their battery as a power source, and will then try to use their charger as a battery source. The charger icon is most likely showing up as fully charged because the laptop doesn't know there isn't a battery present, and assumes that it is fully charged.