Insert USB drive, Turn ON you pc and got to bios... See the boot sequence, check if you can see USB drive under boot sequence and make sure you prioritized the USB.. You may need to remove all device connected USB of course except kb/mouse... Make sure you insert the USB bootable drive to USB 2.0 port.. USB 3.0 need specific driver to recognize connected device to it..
Insert USB drive, Turn ON you pc and got to bios... See the boot sequence, check if you can see USB drive under boot sequence and make sure you prioritized the USB.. You may need to remove all device connected USB of course except kb/mouse... Make sure you insert the USB bootable drive to USB 2.0 port.. USB 3.0 need specific driver to recognize connected device to it..