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Every time i clear or reset the bios or cmos the laptop battery works but....

I have a sony vaio laptop. I am having problems with the battery.

Sometimes the laptop stops detecting the battery. It does show the battery remaining but it does give power to the laptop.
I have to have the power plugged to the laptop so it can turn on.

I tried to use 3 different batteries and 1 brand new battery and same problem.

This is what sometimes happens.
If i clear the bios or cmos the battery starts working again when i turn on the laptop.

After it reaches a 100% full battery the battery stops charging but that is when laptop stops detecting or receiving power from the battery but it shows the battery remaining. If i disconnect the power adaptor from the laptop, the laptop will turn off.

This also happens,
Battery at 50% with computer turned on and then turn off laptop and leave it charging over night, the battery will charge to 100% but laptop will not turn on with power adaptor disconected from laptop.

Other situation.
If i reset bios or cmos the battery will work with the laptop. I can turn it off and turn it on without power adaptor and still work but until the battery discharges or reaches again 100%.

If you have and idea of what it is and what can i do, I would really apreciate it.
3 answers Last reply Best Answer
More about time clear reset bios cmos laptop battery works
  1. Double check the connections from the battery to the laptop. Clean them.
  2. Can someone else tell what you think what could it be?

    I do not think is the contacts, Even so I cleaned them but no difference.
  3. Best answer
    I think the charging port inside the laptop is faulty. Get the laptop tested and if necessary get a new charging port put in.
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