Alright so i have two Compaq Evo N610C laptops and both of them work fine whenever on battery power; however, on one of them whenever i unplug the power cord it makes a loud whining noise as if a fan was touching plastic or something then just compeltely shuts off. On the other laptop nothing happens, battery works fine.
Also, whenever the laptop is off and the battery is plugged in i can hear a small whizzing sound coming from around the battery.
Does anybody have any ideas on what the problem might be?
Thanks!!
Also, whenever the laptop is off and the battery is plugged in i can hear a small whizzing sound coming from around the battery.
Does anybody have any ideas on what the problem might be?
Thanks!!

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