How do I force a Dell BIOS update?

Click Start. In the Run or Search box, type cmd right click on “cmd.exe” in search results, and select Run as administrator. At the C:> prompt, type biosflashname.exe /forceit and press Enter. After saying YES to the User Access control prompt, the update should commence without the AC adapter warning.

How do I update BIOS from command prompt?

Press Window Key+R to access the “RUN” command window. Then type “msinfo32” to bring up your computer’s System Information log. Your current BIOS version will be listed under “BIOS Version/Date”. Now you can download your motherboard’s latest BIOS update and update utility from the manufacturer’s website.