BIOS, diagnostics and other start-up notes

You can also run the built-in diagnostics in case of a hardware crash

BIOS

Entering the BIOS

Power off the machine, then power it on again and press repeatedly the appropriate key several times while the computer is starting

Dell	F2
HP	ESC

Enabling boot on a USB drive

Dell

Settings => General => Boot Sequence: USB Storage Device must be selected, and in the first place of the Boot Order

Updating the BIOS

Notes

There are lots of HP BIOS details in HP PC Commercial BIOS (UEFI) Setup - Administration Guide (pdf document)

Other start-up related notes

Choosing the boot media or the diagnostics

Dell	F12 (enter the One-time Boot Menu)
HP	ESC and then F2

Booting in safe mode

Safe mode <=> Mode sans échec

Windows 10

Read the Windows Recovery Environment (Windows RE) and the Safe Mode notes

Windows 7

Power off the machine, then power it and press the appropriate key at the same time

Dell	F8
HP

See also Performing a safe clean boot

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