Dellbiosresetiso -

: For Dell desktops made after April 2020, unplug the power and hold the power button for 30 seconds CMOS Battery (Laptops/Desktops)

For older desktops, removing the coin-cell battery on the motherboard for 30 seconds will physically clear the BIOS settings. dellbiosresetiso

Whether you are trying to clear a forgotten or recover from a failed update, here is everything you need to know about using an ISO-based reset. What is a Dell BIOS Reset ISO? : For Dell desktops made after April 2020,

If you are locked out by a password, Dell recommends contacting their Official Support (though this may require a fee for out-of-warranty devices). dellbiosresetiso

Before you declare your laptop dead and start shopping for a replacement, there is a little-known lifesaver you need to know about: