Today, removable media based on flash drives may already include, in addition to the usual optical drives, power system load.
The main thing with this - tell the computer exactly where it should be loaded.
The first thing you need to gain access to the BIOS settings of the motherboard of your computer.
Restart your computer, and then, when he first begins to boot, press the DEL (in most cases).
While in the BIOS settings, scroll to Boot Device Priority (for AMIBIOS) or boot device list (in the Advanced BIOS Features from the BIOS AWARD).
Set Flash Device (name may differ) as the first boot source.