Fan works like crazy and the battery drains quickly after the installation of Sierra on MacBook Pro

I installed Sierra and since my MacBook fan runs like crazy and the battery drains very quickly. Right now I use Safari and Mail. He has never done this before. How can I stop this from happening? It is now more than 48 hours since I installed Sierra. All constructive suggestions are welcome.

Try resetting the SMC http://support.apple.com/kb/ht3964

Tags: Notebooks

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