Check the Recovering from a Major Hardware or Windows 10 Crash section
The BIOS version is usually displayed quickly when a computer is booting, and when you are in the BIOS options screen
You can also get the BIOS version when your operating system is running!
Use the msinfo32 command and check the BIOS version line in the system summary screen
Use the dmidecode command:
dmidecode -s bios-version
$ sudo dmidecode -s bios-version [sudo] Password for your_login: 1.10.0
Power off the machine, then power it on again and press repeatedly the appropriate key several times while the computer is starting, until you see the BIOS options screen. This should take place before you have to type the Windows bitlocker password, or the Linux (de)crypting password
Boot Sequence: USB Storage Device must be selected, and in the first place of the Boot Order
Updating the BIOS is safe, but it may be a good idea to get help from somebody who has already done it. Your computer may restart several times, blink, etc, before the update is complete.
Be sure to be connected to a power supply during the update
The BIOS update will take place during the boot time, then Windows will start and bitlocker will automatically start again
If the BIOS update does not seem to work (no update takes place), check this HP BIOS update section
There are lots of HP BIOS details in HP PC Commercial BIOS (UEFI) Setup - Administration Guide (pdf document)
Safe mode ⇔ Mode sans échec
Read the Windows Recovery Environment (Windows RE) and the Safe Mode notes