Have you followed these steps?
* While the "TOSHIBA" logo is displayed, press the F2 function key to start BIOS Setup.
* Check the version of BIOS and press the F9 function key then Enter to load setup defaults.
* Press the F10 function key then Enter to save settings and exit.
The computer will automatically reboot.
Is your ***BIOS*** ***Version:*** 5.10 ***Dated*** 2015-09-02 ?