The system restarts repeatedly at the Dell logo.
Dell provides a which is essentially the binary file wrapped in a format the system's built-in recovery tool can read. dell latitude 3420 bios bin file exclusive
The laptop powers on (LEDs light up), but nothing appears on the display. The system restarts repeatedly at the Dell logo
If you need a pure .bin for an external programmer (like the CH341A), you can sometimes extract it from the official Dell installer: Dell Latitude 3420/3520 System BIOS | Driver Details dell latitude 3420 bios bin file exclusive