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It sounds like your computer is in sleep mode. Press and hold the power button for about 20-30 seconds until the moon button turns off. Then pull out the battery and unplug the power. After those are done press and hold the power button again for 30 seconds, the release. Plug the power back in and power on the computer. Let me know what happens.
Did you still need help with this question? Please let me know what happens when you try the above suggestion.