HP probook 4540s When Ipress on the power button, the power button makes a series of short and long light on/offs and will not

Ardian_2

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Mar 7, 2017
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HP probook 4540s When Ipress on the power button, the power button makes a series of short and long light on/offs and will not start up.
 
Solution
you need to actually count the lights, they are a code indicating what the issue is.
https://hpipg.wordpress.com/2013/09/24/blank-screen-led-error-codes/