Laptop won’t turn on

My HP EliteBook 840 with Windows 8 will not turn on at all. When I tried to turn it on, the keyboard started blinking, but still didn’t start up. Is there something wrong with the power system or something else?

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Hi,

What lights on the keyboard are blinking and is there a "pattern" to the blinks, e.g. 2 blinks - pause - 2 blinks - pause or 2 blinks pause - 4 blinks - pause - 2 blinks - pause etc?

have you tried starting it with the charger connected?

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