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)
Own a Predator Laptop? Then I bet you have learned a thing or two from beststevie. He has been helping out in this forum for quite a while and it's about time we recognized him for it. Thanks beststevie!