A laptop's Basic Input/Output System (BIOS) is software that allows the computer's hardware to communicate with its operating system. You can enter the BIOS while your system is booting up to edit your hardware's basic operation settings. Your BIOS may be password-protected, depending on your specific BIOS chip. It's possible to bypass your Toshiba Satellite laptop's BIOS password if you forget or lose the password.
Open your display panel. Hold down the Power button for about three seconds to turn on your Toshiba L300 laptop.
Hold down the "ESC" key while the computer is booting up. Press the "F1" key as soon as you hear a faint beep. Release the "ESC" key and press the "F1" key again to enter the BIOS set-up menu.
Enter your laptop's default BIOS password if prompted, then press the "Enter" key. The default password is "Toshiba" in all Toshiba-based BIOS chips.