MacBook Pro will not boot.

My macbook pro was working. I did not use it for about 4 months not connected to the charger.

Went to use it, and it will not boot now.

I tried fully charging the battery, no change. I left it charging for several days, no change, I switched the 2 ram cards, no change.

I tried with no ram cards, no change.

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What does the battery tester on the left side of your system show when you press the button? Also what color is the MagSafe charger LED at the plug Green or Amber?

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