This post shows just how clueless you are. You don't need to log in for a GPO to run, I have several GPOs which will run when the computer is booted up, before the user logs in.
Also, even if you managed to crack the bios password, or reset it, and even if you managed to crack the local admin password, and even if you managed to log in locally and install some software, it still wouldn't help you on my network. All users only get access to the programs and shortcuts that I give them access to, so the moment you log back into the network, you won't be able to access whatever software you just installed. If you try and run something that I don't want you to, I'll know about it. I'll then figure out how you managed to get software installed that I didn't do myself. I'll then make sure you're fired for gross misconduct.
So please, feel free to come at work at my business.