For detailed instructions, see the Disabling Secure Boot and enabling Legacy Boot on a Desktop Computer (Windows 8) section in this document. … 2. Making HP and Compaq computers boot off USB isn’t always obvious, but it doesn’t have to be impossible. HPQ machines usually do have an option to enable USB boot, but when you go into the boot order, you’ll never find USB. We can get our Probook 645s to boot from the USB by going into the BIOS Settings > Advanced > Secure Boot Configuration. After that, when you have no idea about HP boot menu key and HP UEFI boot from USB at the next time, you can refer this tablet and successfully enter secure boot menu, and finally enable or dis able secure boot … The computer can boot an operating system from a hard drive, floppy drive, CD or DVD optical drive, USB storage device, or a network. and then selecting Legacy Boot Enable (or Disable) and Secure Boot Disable. The flash drive will work fine in another desktop pc, I get the install screen. Tried several flash drives, but the probook does not boot from the usb flash drives! After creating a bootable USB with the Rufus tool, I tried booting with it but it didn't work. On the probook, it does nothing! Reboot your notebook and press F10 until the BIOS screen loads. No install screen, nothing! To start your computer from a valid bootable disc, such as an HP recovery disc, disable Secure Boot in the BIOS, and then use the Boot Menu to select the CD/DVD drive as the boot … USB stick, as built, boots on a large number and variety of systems, except the HP4510s 2. I read around and saw that the SecureBoot and Legacy options need to be disabled and enabled respectively but that doesn't help either. Having Secure Boot enabled in the BIOS prevents legacy boot devices from starting your computer and includes bootable CDs and DVDs. Set your BIOS to allow your computer to boot from CD-ROM or USB and use a boot-up disk to get your computer started. Clonezilla works just fine when booting from CD / DVD 6. Using Clonezilla i486 version (lowest common denominator) 3. HP ProBook BIOS Key to Enter into BIOS by Matt Roberts July 12, 2019, 1:22 pm Here is the HP ProBook BIOS key to enter into BIOS to change the settings, boot from USB or update the BIOS. 2) Press the key (F9) to open the Boot Device Options menu. 3) Press the Up and Down (↑↓) arrow key to select the USB drive, and press Enter to boot HP PC from USB. So, I bought a used HP Probook 9470M recently and wanted to install Windows 10 on it. Get into Boot Option to boot HP computer from USB drive. BIOS "Boot" tab, Boot Device Priority, Hard Drive Boot Priority, Move "USB-HDD0" up to #1 position. You should see an option which says "Boot Options." Also make sure that you have an OS on it. Also disabled FastBoot. When the computer starts, the system BIOS begins to check a pre-determined list of drives and devices that may contain an operating system such as Windows. BIOS legacy USB enabled 4. current BIOS formware 5. Select this. If you cannot select the USB flash drive from the Boot Menu, disable Secure Boot and enable Legacy Mode in BIOS. Then we go into Boot options and can choose the USB drive. Navigate to the System Configuration section. 1. 1) Insert USB into HP PC, start/restart it, and press ESC key immediately and repeatedly until the Startup Menu opens.