Updating bios without floppy drive
(Figure 1) Figure 1: BIOS Loading Screen Or by pressing F12 and selecting BIOS Setup from the menu.
(Figure 2) Figure 2: One Time Boot Menu Caution: Be careful when altering BIOS settings.
Rufus Rufus is a small utility that helps format and create bootable USB flash drives, such as USB keys/pendrives, memory sticks, etc.
Windows, allowing the software to control the PC's hardware.
The BIOS also contains instructions that the PC uses to perform basic instructions, such as whether to Boot from Network or Hard drive, which drive to Boot from first.
The CMOS contains the BIOS and its settings, the NVRAM contains the ESCD, updating the BIOS will not clear the NVRAM.
You can enter the system BIOS or Setup on a Dell PC by pressing F2 at the Dell loading screen.