Windows 8 laptop drains battery when completely shutdown or hibernate

I have recently purchased Hp DV6 Envy 7210tx laptop with built in Windows 8. Everything works fine but when I shutdown or hibernate this machine its battery drains almost 1.5%/hr. So in one night it almost goes 15% down. I have disabled all wake up settings and also disabled "Fast startup" option but still no success. Please help me to solve this issue. 
 

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Last updated March 1, 2020 Views 5,563 Applies to:
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Answer
BIOS update solved my issue.

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