Hold down ESC while turning on via POWER button. The hit F1 when screen message tells you to do so!
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At the boot screen, right when the Toshiba logo appears, press the Esc key. You will see the message "Check the system. Then press the [F1] key." Press F1. You will now be in the BIOS.
Laptop's BIOS settings which can be accessed by pressing the [Esc] key during the memory test when booting the laptop.