Laptop batteries have chips in them that when getting old, can act strange. Any time with a problem, you may want to remove the battery and test if laptop works without it, a sign of need to change the battery. Some laptops have a built in software to re calibrated the battery that is needed once in a while and is usually achieved from BIOS.
Another common problem with laptop is the build in internal heat due to failing fan on cpu or occlusion of the heat outlet. So in your lap, make sure you are not closing the heat out lets.
Good to know you have had a happy ending.
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S a s s a n .
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"No one is going to take our democracy away from us. Not now, not ever.
" JOE BIDEN
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