[Doggan]

I have a very strange problem with my laptop.

- The battery needs to be charged for it to work. When the laptop is off and plugged into the AC power, the battery will charge. But when I turn on the computer, power is taken from the battery instead of the AC power.
- If the battery is drained (or completely taken out of the laptop), yet it is plugged into the AC power, it will start to boot up, but then shut off within 1-2 seconds due to lack of power.

It's weird, because the AC adapter is clearly working, as it charges up the batter properly. But when the computer is on, the AC is totally ignored.

Any idea what could be the issue(s)? Thanks for any help.

[Triple6]

Have you tested the power adapter to make sure it is putting out the correct voltage; it may be putting out some power but not enough to charge the laptop and power it at the same time.

[Doggan]

Hmm.. how would that happen? How can I test it? The AC worked in the past. Then I stopped using the laptop for half a year, and now I have theproblem.

[Triple6]

If you have a volt or multimeter you can test the voltage coming out of the laptop. Or any local computer shop should be able to test it for you. The voltage is marked on the label on the adapter.