Macbook shutdown. It won't reboot and the power cord isn't lit when plugged in

Had my macbook running and it just shut down. I cannot get it to reboot and the power cord isn't lit up when it is connected to the computer. The only problem leading up to this was I could not use the computer unless the power cord was connected. Any suggestions? Thanks

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    > {quote:title=FrankieCz wrote:}{quote}
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