For a while vendors tried to lock down the BIOS pretty hard. Dell might still, I remember having to call and get assistance when a password was forgotten and they had to generate a backdoor key of some sort. Maybe that is less of a thing now that Bitlocker is widely used on corporate laptops and it is sensitive to tampering.
In the past they had jumpers for the same purpose.
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For a while vendors tried to lock down the BIOS pretty hard. Dell might still, I remember having to call and get assistance when a password was forgotten and they had to generate a backdoor key of some sort. Maybe that is less of a thing now that Bitlocker is widely used on corporate laptops and it is sensitive to tampering.