i am portuguese i dont know what u guys are talking about ._.
what is reset your bios?
and what is CMOS??? what part of the pc is that? portugusese!! sorry dont know that term xD
ty btw for the help
ur mother board has a "thing" the BIOS..aka BASIC INPUT OUTPUT SYSTEM. it controlls the motherboard. and ur bro set a password on the bios. so open ur case, and find the battery and pull it out and wait 15 min to be safe, and then put it back in, and ur good to go.