power button blinking continuously and will not power on

Question

HP ProBook 4540s

This HP model was released in 2012. Upgrades include a anti-glare 15.6" screen and a finger print reader.

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left working and plugged in while out of town for 5 days, now this when I came home. What happened and how can I fix it?

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yes did that and also pressed and held button 20 secs then plugged back in and reinserted battery, same blinking. devastated!

I'm sorry I can not be of any other help, that is the only way I know how to fix it. You should most likely take it to a repair shop then.

yes did that and also pressed and held button 20 secs then plugged back in and reinserted battery, same blinking. devastated! — alice fulwiler
I'm sorry I can not be of any other help, that is the only way I know how to fix it. You should most likely take it to a repair shop then. — Galen P Garofalo