My dell inspiron 15 3521 is 2 years old.. i had a problem with the battery and i replaced the battery last September.. my battery drained low and i left it without charging for a month.. Now as i power it .. it says 0% available (plugged in, charging) but it stays there.. i have tried pressing the power button for 40 secs and there hasnt been any change.. i need help asap
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