Let me explain the topic :)
I'm in an A+ class in college, and as a lab assignment, we were tasked with breaking a computer and getting another team to try and fix it. The only requirement, however, is that it cannot be so bad that the only way to fix it would be to reinstall windows alltogether. Also, it has to be a software-based problem, not hardware.
I've thought about destroying the MBR, but I don't know how to go about actually doing that, and I don't want to do that now anyhow because the team that was going to work on my PC now knows what I *was*going to do, so I need a new idea. Also, that team decided they wanted to delete the NTLDR, so I don't want to get them to fix their own problem. Anything else?