How do i unplug without shutting down computer?

Hey Hi, i have a IBM ThinkPad (LapTop) and few weeks ago when ever i unplugged it from the outlet the computer didnt shutdown because it was using its battery and now the battery is fully charged and whenever i unplugg it the laptop shuts down. i dont know what the problem is because the battery is not dead or low... show more Hey Hi,
i have a IBM ThinkPad (LapTop) and few weeks ago when ever i unplugged it from the outlet the computer didnt shutdown because it was using its battery and now the battery is fully charged and whenever i unplugg it the laptop shuts down. i dont know what the problem is because the battery is not dead or low does anyone know anything about computers. the laptop works fine when its plugged in to the outlet but when unplugged it should be the same



Thank You.
Update: what u mean always shut it down.
its like this my computer is plugged in to the electricity (outlet) and if i unplugg it it shuts down it shouldnt shut down it should use its battery do u get me?
Update 2: what u mean always shut it down.
its like this my computer is plugged in to the electricity (outlet) and if i unplugg it it shuts down it shouldnt shut down it should use its battery do u get me?
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