dell e7440

hi i need remove dell administrator password motherboard model:la-9591p rev 1.0(A00) its backup i already attached. i tryed too many files for this model but no display when i write this file so its display but its administrator password..i want to unlock it.

hello, i need to unlock bios password for dell e7440, thanks. bios backup of u1 and u2 in (attached files)