Here I have a toshiba satellite L15-B1330 Laptop with one partition on HDD plus windows 8, it gives me a message said that Reboot and select proper boot device or insert Boot Media in selected Boot device and press a key but I tried to use HDD in other computer and it works property. I liked to change boot mode from UEFI to CSM or legacy in BIOS setup but this machine have not that point. can you help me to resolve this kind?