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:
Turn on the computer.
Go to dell.com/support.
Click Product Support, enter the Service Tag of your laptop and click
NOTE: If you do not have the Service Tag, use the auto-detect
feature or manually browse for your computer model.
Click Drivers & downloads.
Scroll down the page and select BIOS from the Category drop-down list.
NOTE: In the Change OS drop-down list, select the operating
system installed on your computer.
Expand BIOS to view the available BIOS files.
Click Download File to download the latest version of the BIOS for your
Save the file and once the download is complete, navigate to the folder
where you saved the BIOS update file.
Double-click the BIOS update file icon and follow the instructions on the