#DVNZJF1-595B What is my password?
SOURCE: how can i unlock dell latitude d420 bios password
Clearing the CMOS will reset the password...
Take the button cell battery out for a few minutes, put it back in, and all settings, including the password, should go back to defaults.
Unfortunately it looks like your BIOS battery is under the keyboard...
Dell has got what looks like decent directions here, for getting at it:
http://support.dell.com/support/edocs/systems/latd420/en/SM_EN/coinbatt.htm#wp1123951
SOURCE: bios password dell d800
Remove BIOS battery. Short BIOS jumper or leave the battery out for a long time(Over night,maybe) This should default the BIOS to having no pass word present. If that doesn't work then evidently Dell has one within the BIOS . Just ask them.
SOURCE: I have forgotten my laptop bios password
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