This is a method on how to remove a bios password on a Dell Latitude E7270 and E7470. The process will be the same on both, and is very straightforward. I am not sure if this method was discovered or not in the past, I actually was tinkering around in the bios, and found that their is a very simple way. This process will actually work with any Dell Latitude machine that is older, HOWEVER, the E7270/E7470 machines require an extra step to unlock it.
Website to acquire your bios key:
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