Hat are some things I can do to a computer at work to test a co-worker.

Title: What*

Background: I work helpdesk and we recently hired a new tech. My boss has asked me to “break” a computer and have the new guy troubleshoot and fix it. Today, I set a static IP that I knew was a duplicate to the IP on my computer. After some troubleshooting and a little help he figured it out and got it fixed. He enjoyed it and I found it fun too. I think I’m going to take out the RAM next and let him troubleshoot that.

I’m still new on helpdesk as well, though. So my base of ideas are small. What are some other things I could do that could make him think and help both him and I learn?