I'm having a problem with some system, i wonder is there a way to elevate ,in windows XP or 7 or any other version, the privileges.
the problem is:
1) the BIOS is password protected
2) the user account does not have writing privileges to disk C (hell, even the control panel is protected)

so the method of using booting disks are not an option cause i cant configure the BIOS boot order
and the methods to use the log on screen not an option either.

what I'm looking for is a method that will give me the writing privileges to disk C
I don't mind if a solution is some source code in any programming language that by passes this limitations or some tools
any way I'm for any solution, prefer a solution that does not changes the original administrator password or has the ability to restore the old one

any idea, solution, walk through, step by step are welcome
just a student for software engineering so have a limited knowledge in all programing languages equally

please somebody help!!!