Hi,
In order to update the BIOS of your computer, you can even follow the below mentioned steps wherein you can download the driver from the manufacturer’s website:
-- Go to the "Driver download" page of your computer manufacturer’s website.
-- Put in the system’s Service Tag and choose the Operating System.
-- Select the BIOS and download the latest Version of BIOS.
-- Flash the BIOS and check if the system is working fine.
During the BIOS update, system will Shut down and Restart and the Bios Flash will be completed.
Kindly let me know for further clarifications.