I just got my Gigabyte GB-BXi7-4770R. BIOS detects the RAM, SSD, and the bootable USB flash drive. However, even when selecting "booting from the UEFI USB flash drive", it will not boot from the flash drive, it will only boot to the BIOS. BTW, I have tried both fs=fat32 and fs=ntfs, it does not make any difference. I can't believe it is an issue with USB 3.0 vs USB 2.0. All USB ports are 3.0 and my flash drive is 2.0. Any ideas (before I go out and buy a USB optical drive)? Thanks.