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‎03-06-2022 07:50 AM

HP Recommended
Product: HP EliteBook 840 G2 Base Model Notebook PC

Dear community,

 

My laptop has suddenly shut down and I can't turn it back on.
When I press the start button, it blinks for a little while (so do the wifi/mute and keyboard backlight buttons), and the wifi/power/power/hard drive LEDs blink oddly (see video). 

First led : Wifi

Second led : power

Third led :  power cable

Forth led : drive loading (SSD)

 

When I put the power cable on, the power LED is sometimes orange.

 

What I've already tried:
- RAM test on another identical laptop, it is functional. RAM exchange too
- Tested the battery on another identical laptop. The battery works
- Tested the SSD, it works
- Try to reset the BIOS, but the screen stays black all the time
- Processor fan runs for only 1/2 second
- Hard reset, nothing

 

Could it be a motherboard problem?

 

Thanks in advance.

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