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erezha Student
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hp probook 4340s not turn on

probook 4340s
Microsoft Windows 10 (64-bit)

hi i have hp probook 4340s with i5 3230m 

 Laptop does not work , and now it will not turn on . When inserting a battery or charger cpu fan starts 3 seconds and turns off...

until I unplugged . There is no indication on the computer , I tried to do everything what it could be ?



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hp probook 4340s not turn on

Hello @erezha



Appologize for the issues you have been experiencing with your HP Notebook.



The below document has some additional information that may assist, otherwise the notebook may require a repair from HP authorized repair center.



HP Notebook PCs - Computer Does Not Start (Windows 10)


I am an HP employee.
Make it easier for others to find solutions, by marking my answer “Accept as Solution” if it solves your problem.
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hp probook 4340s not turn on

Try this,


1. Disconnect the AC Adapter.[charger]
2. Remove the Battery.
3. Hold the Power button down for 30 seconds. [with no power source or peripheral connected]
4. Reconnect the AC adapter without connecting the battery.
5. Switch ON the Notebook power and check if the fault persists.


Also, check the Caps lock light for the following patterns.

LEDs blink 1 time
CPU not functional
LEDs blink 2 times
BIOS corruption failure

LEDs blink 3 times
Module error not functional

LEDs blink 4 times
Graphics controller not functional

LEDs blink 5 times
System board
General system board failure

LEDs blink 6 times
BIOS authentication failure

I'm an HP Employee.The opinions expressed here are my personal opinions, not of HP.
Click on Thumbs up if my post helped you.Make it easier for other people to find solutions, by marking an answerAccept as Solutionif it solves your problem.

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