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- Laptop won't turn on power button blink every 4 sec

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08-27-2021 03:24 AM
Product: Hp Probook 450 g2
Operating System: Microsoft Windows 10 (64-bit)
Hello
My laptop is hp probook 450 g2 and it won't turn on. When i try turning it on using battery or charger the power button, numlk key
, speaker and wifi button And the charging led blinks together about every 4 sec
I noticed also that when the blink happen the fan start rotating and stop i may add while i plug the charger the power button blink
I already tried hard reset removed ram and clean it but nothing changed
So what to do?
Hope anyone help me
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