Inspiron 8100 power issues?

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I have an Inspiron 8100 that has strange power behavior. It will only
start from battery power. Once it is started the AC will charge the
battery (I have it set to go to sleep when I shut the cover, so I
basically never turn it off)

When it does power off (like when the wife forgets and hits shut down) it
will not restart from battery power until it has been sitting for a day or
so untouched.

I have replaced the small DC|DC power board, but this did not solve the

The other day it powered off when I tried to adjust the display brightness
(fn & up arrow)

Any ideas?
Thanks in advance,

Re: Inspiron 8100 power issues?

Have you considered replacing the ac adapter? Sounds like it is not putting
out the required current to start the laptop.

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Re: Inspiron 8100 power issues?

I should have mentioned that I have also swapped out the power supply with
an equivalent one from work.

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