how to open BIOS of laptop toshiba satellite A20?
To enter the BIOS, press the Esc key when the Toshiba script shows up on the display. You should then get a message to press the F1 key to continue. Press the F1 key and you should be in the BIOS. The Boot sequence is on Page 2 of the Bios settings on many Toshibas. To get to page 2 press the page down key. Make sure you follow the screen prompts because your system may be slightly different.