problem on system recovery

I was chosen to rebuild my computer's system but then ther is a problem,I
don't know what is the password to the setup bios,they didn't even tell me
(what I mean to say that the computer came to my relatives).Is there a
solution for this,please help.....

There is a solution.

If your remove the CMOS battery for 24 hours and do not power the computer
(unplug from the wall outlet), that will reset the password to none.

Or you can clear the CMOS from the Clear CMOS header on the Motherboard.

You need the specs on the motherboard to find where the header is located.

--
CSM1
http://www.carlmcmillan.com
--