Type NTPASSWD at google to set the windows password.

As to the BIOS password the machine I went to dell.com

Dell writes:"Disabling a Forgotten Password and Setting a New Password

To reset system and/or administrator passwords, see "Clearing Forgotten Passwords."" at http://support.dell.com/support/edocs/systems/opgx620/en/ug/A02/advfeat0.htm#wp1117484

It appears that nothing stops you from curing this issue. Just a little google and dell.com