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remove bios password & adjust brightness with keyboard

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Hi all. I have a brand new UltraBook HP-840G5 computer for school with windows 10.

I think that at first boot i was asked by HP security manager to ass a password and it's for the bios everytime I boot. can that be removed and be a password only for my account?

 

plus, for some reason, the brightness buttons stopped working for me (even though other stuff like mute, volume up/down still do). i can adjust brightness manualy through the electric consumption, but those buttons did work until they just didnt.

i tried to update the driver of the monitor and the graphic card like many tutorial say. didnt work. any ideas?

 

this is a brand new computer and it's too new to have such problems :\ 


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