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Elitebook 850 G5 won't charge over USB-C after BIOS update

HP Recommended
Elitebook 850 G5
Microsoft Windows 10 (64-bit)


I bought this power adapter:
And I could charge the notebook via thunderbolt without any problems until I installed BIOS update HP Firmware Pack (Q78) version 01.10.01 Rev.A. 
I can charge my mobile with that power adapter so the power adapter is not broken.
Any idea how to solve this? Are there any additional drivers for thunderbolt / usb-c?

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