It is recommended to update
your BIOS (system setup), on replacing the system board or if an update
is available. For laptops, ensure that your computer battery is fully
charged and connected to a power outlet
Restart the computer.
Go to dell.com/support.
If you have your computer's Service Tag or Express Service
Code:
NOTE: To locate the Service Tag, click Where is my Service
Tag?
NOTE: If you cannot find your Service Tag, click Detect Service Tag. Proceed with the instructions on screen.
Enter the Service Tag or Express Service Code and click Submit.
If you are unable to locate or find the Service Tag, click
the Product Category of your computer.
Choose the Product Type from the list.
Select your computer model and the Product Support page of your computer appears.
Click Drivers & Downloads.
On the Drivers and Downloads screen, under the Operating System drop-down list, select BIOS.
Identify the latest BIOS file and click Download
File.
Select your preferred download method in the Please select your download method below window; click Download File.
The File Download window appears.
Click Save to save the file on your
computer.
Click Run to install the updated
BIOS settings on your computer.