Aloha, my name is Andy, in this video I will show how to boot from USB device, if you have a HP Compaq dc7800 Ultra-slim Desktop PC I have my bootable USB drive with Windows Thin PC. I will insert in the front panel USB. Then I press the power button from the PC. And the PC is starting. Quickly I press repeatedly the F10 key from the keyboard, until appears this menu. I select the English language and I enter in the BIOS settings. I navigate to the right with the right arrow from the keyboard. I go down with the down arrow from the keyboard to the Boot Order and hit the Enter key.
Now the first boot device is the CD-ROM Drive, if I put a bootable CD or DVD, the PC first will boot from that DISC. I press the Enter key and it appears the 2 side arrow, now with the down arrows from the keyboard I can move down the CD-ROM device. Now I press the Enter key again and with the up arrow from the keyboard I go up to the USB device. I press again the Enter key and with the up arrow from the keyboard I push up until this will be the first boot device. I press the Enter key again. Next I press the F10 key to Accept the changes. I press again the F10 key. I press again the F10 key to save the changes and exit from the BIOS. The PC is restarting. For a second appears this screen with: Attempting Boot From USB Device and I press the space key. The PC is booting from the USB device. After a couple seconds appears this screen and the windows is loading from the USB.
So this is how you boot from USB device if you have a HP Compaq dc7800 Ultra-slim Desktop PC. If you liked this video or it was useful, please subscribe, like, share and comment. See you next time, goodbye..