The Panasonic Toughbook looks quite different from a typical laptop because it is designed to withstand heavy wear and tear without being damaged. However, it is a Windows-based system on the inside and works just like any other Windows laptop. Accessing the BIOS and resetting the machine to the default settings is done in the same way that any other laptop's BIOS would be reset.
Click on the "Start" menu and select "Restart." As your Toughbook laptop is restarting, watch for an on-screen instruction to press a certain key to access the BIOS. The message will say something like "Press F8 to enter Setup." This instruction will appear moments after you turn on the machine (but before the Windows logo appears).
Press the designated key to access the BIOS set-up menu as soon as the instruction appears. You must press the key quickly, as the BIOS set-up message will only display for a few seconds. If the Windows logo displays, you have waited too long to press the key and you will need to reboot the machine again and press the appropriate key before it enters Windows.
Locate a tab or command that says "Restore Default Settings" on the BIOS set-up menu. You may need to press a certain function key to select this option, or you might need to use your arrow keys to navigate to the menu item and then press "Enter." Each BIOS is different depending on the laptop model and manufacturer.
Press "F10" (or another key as directed) to save the changes. Then press the appropriate key (usually the "Escape" key) to exit the BIOS. The default BIOS settings are now restored on your Panasonic Toughbook and Windows will continue to load.