during boot ( before the windows bootloder is displayed )
you should have the option of hitting <f2> or < f12> ( might be < f10> )
f2 sets up the bios
f12 or f10 selects the boot option ( what to boot from )
different manufactures do things differently so yours might be different
also that usb thumb drive might not have the operating system installed correctly on it
Microsoft royally "bleeped up" the uac
even from the Administrator account you NEED to use the start menu and look for
" run 'program name' and administrator "
i would "BURN AS A IMAGE!!!
the suse 12.2 iso to a dvd
put the usb thumb drive in the slot
and the dvd in the drive
( after setting the bios to BOOT from dvd FIRST )
use the dvd to do a persistent install of suse12.2 to the usb thumb drive
take EXTRA CARE !!!!!!
to install grub2 TO THE USB !!!!!
and not the the harddrive !!!