[CryptoExchanger]

1) not responsible for anything you do

Now get a usb linux liveboot.
mount the windows partition and cd to C:\Windows\System32
replace sethc.exe with cmd.exe
log back into windows and press shift 5 times at login screen
a cmd screen will come up with admin rights, just net localgroup your way in

[CryptoExchanger]

Most Network Admins set a bios password.

I know a lot of schools, including mine, don't use bios passwords, as updating all the schools computers would take forever for one person. Probably other reasons to.

[CryptoExchanger]

Of course, multiple working ways are always helpful. Good-luck.

[tony6r]

Thats impressive, but the whole point of being an admin in my case scenario would be to install stuff. LoL