i have owned a used MB from ebay to replace my burned one...it fits ok but has 2 user :one user is for system run,fortunately i have discovered the password fon run the pc.the second user is as "administrator" and doesn't permit enter BIOS setting.I tried to overwrite the bios whith HP original file but the tool needs administrator passord for flash the bios.
I wish to remove all users and passwords,please help me

HP ProBook 6440b

Numero del prodotto: NN224ET#ABU
Numero di serie: CND0201W4D

thanks in advance​

thanks for admit me in this community,i hope to learn enough to survive to next world war...ciao dall'Italia