For those who have the same problem stated above... It's the BIOS.
From the original default Windows 8 on Aspire S3, get the latest BIOS which is v2.17 (at the time of my post). Apply the new BIOS. Then access BIOS and turn off UEFI mode. Reboot. Now the BIOS will recognize your bootable USB (Windows, Linux, whatever)
Member RevoMaxx is quickly moving up the ranks of Acer Community. He joined us in September and is already making a difference. It's great to see new members like him make a difference only after a few months. Thanks RevoMaxx!