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Microsoft Windows 10 (32-bit)

After a driver update from avast driver software,  my laptop won't start up. No sound is coming out when I press on button. No lights showing. It's a HP envy laptop, and the battery is full as it was connected to power all night before I tried to reboot when it stopped working. I can't use a external boot up device as nothing is happening to let it choose where to boot up from. Any ideas how can I get it to boot up? 

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