boot into bios(press esc or corresponding f-key)
then hanapin mo ung boot priority,
minsan sa bios may option ka din pumili ng boot device,depende sa mobo;
yan lang naman; as long as makakapunta ka sa bios, goods na un, then after installation; reverse mo ung boot priority from usb to hdd or ssd; make sure na magawa mo to kasi mag no-no boot device unless naka on lahat na boot device options para iscan ni mobo ng possible na boot drive..
just make sure lang na naka prio si usb mo pag na iinstall ka then ibalik mo si boot priority bac to ssd or hdd after