HP Compaq 8200 Elite SFF won't boot from USB drive

After spending way too much time trying to figure out why new HP's can't boot from USB I finally spotted this.

Update: There's new BIOS on HP site that should fix this problem.


• disabling (F5) and re-enabling (F5 again) "Hard Drive" under "Legacy Boot Sources" in the Boot Order seems to make the USB key available as a boot device under the F9 menu


• unplugging the USB key, rebooting, then plugging the USB key back in results in the USB key no longer being available in the F9 menu, so not being able to boot off it. Disabling and re-enabling the Hard Drive as a boot source, as in the step above, is then required in order to see the USB key in the F9 menu again

Thanks slag!