Macbook Pro only starts up from power with battery installed???

I am a tecchie and am working on a customers Macbook Pro.The laptop starts off the power adapter when the battery is installed.As soon as i remove the battery and try to start up with power adapter- it wont start at all.I have already replaced the logic board as well as the power board with still the same issue.Any ideas?It is a 2.2ghz Macbook pro.Any ideas?

Sorry,i know the answer and am a trainee techie.In my service department,i have been given a 65 watt power adapter for testing.However,these newer Macbook units require an 85Watt power adapter to start up without battery as they need more power to crank up.Cheers.

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As you have a backup, take the MacBook to an Apple Store or reseller. In the case of the MacBook Pro, the GPU is soldered onto the logic board, so the whole logic board has to be replaced, being a very expensive repair.
If a post solved your question or helped you, mark it as solved or helpful before posting a reply. Doing this, you will avoid that your own post is marked as solved or helpful. You won’t receive any point if you mark your own post as solved or helpful. Also, you won’t be rewarding the user who solved your question and you will help other users find the answer if you mark the correct reply

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WELCOME!http://i29.tinypic.com/2ef7yfn.gif!
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Macbook Pro only starts up from power with battery installed???

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