I am legendary in my workplace as a computer god. Whenever a computer of some sort is misbehaving and I am called to fix it - 90% of the time simply my arriving and standing next to the offending item will result in its working just fine. The other 10% of the time I locate the cord that has become unattached or loose and plug it back it.
My latest triumph:
Them: "My PC can't access the internet anymore. It worked fine before lunch but now it's broken."
Me (after visually tracing some cords): "Hmmm, maybe it has something to do with the fact that you've moved a 4-drawer file cabinet weighing hundreds of pounds on top of your network cable. What do you think?"