After using the Translate button I was able to understand that you attempted to upgrade to Windows 10* but now you are not longer able to access Windows.
You tried updating the BIOS but it didnt work.
Also you tried holding the power button for 3 seconds to perform a BIOS recovery without success.
BIOS recovery instructions: Instructions de mise à jour du BIOS de récupération pour cartes mères...
Please advise me if the issue you are encountering with is different.
I look forward to your reply.