Dell Precision T5400 (Late 2007) - Manual (Page 104)

104 Clearing Forgotten Passwords
5 Click Save this program to disk, and then click OK.
The Save In window appears.
6 Click the down arrow to view the Save In menu, select Desktop, and then
click Save.
The file downloads to your desktop.
7 Click Close when the Download Complete window appears.
The file icon appears on your desktop and is titled the same as the
downloaded BIOS update file.
8 Double-click the file icon on the desktop and follow the on-screen
instructions.