Flashing the BIOS
You may need to flash (update) the BIOS when an update is available or when
you replace the system board. To flash the BIOS:
1 Turn on your computer.
2 Go to www.dell.com/support.
3 Click or tap Product support, enter the Service Tag of your computer,
and then click or tap Submit.
NOTE: If you do not have the Service Tag, use the auto-detect feature
or manually browse for your computer model.
4 Click or tap Drivers & downloads → Find it myself.
5 Select the operating system installed on your computer.
6 Scroll down the page and expand BIOS.
7 Click or tap Download to download the latest version of the BIOS for your
8 After the download is complete, navigate to the folder where you saved the
BIOS update file.
9 Double-click or double-tap the BIOS update file icon and follow the
instructions on the screen.