Will only run off of battery power

Hewlett-packard / Hp pavilion dv2500 notebo...
April 16, 2011 at 17:15:14
Specs: Windows 7
Please tell me why my laptop can only run off of battery power instead of AC power. Once it dies and is plugged into AC outlet, it usually takes an hour for computer to come on. Another issue is that the battery icon on laptop never acknowledges that it is being charged. When performing Windows Updates. some are unsucessful due to the fact that the computer believes that it is running off of battery power rather than AC power.

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April 17, 2011 at 09:31:24
Laptop no video (or video problems), and battery, AC adapter, power jack T shooting.

See response 1:

Tips about battery charging problems on Dell laptops - may apply to other makes.
See response 3 in this by iTech:

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