The system BIOS, also known as system set-up, is a set of screens that allow you to change your computer's hardware configuration, from the boot sequence to the basic electronic components on your computer. Entering the system BIOS on the Dell Latitude D620 is all about timing. You have to press one key on your keyboard at the right moment upon start-up and you're in. If you miss your opportunity, you can restart the computer and try again.
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Start up the computer.
Allow the Dell logo to appear on-screen. This is called the POST screen.
Press the "F2" key on the POST screen before the Windows logo appears. This will open the system BIOS screen.
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