If it’s a software bug that you’re investigating, unless you’re using a complex network of machines and other equipment then it’s not very likely.
Well, that’s not exactly true. Web hosting equipment is always failing. And disconnected wifi connections can lead to all sorts of weird problems due to timeouts.
And don’t forget the Pentium FDIV bug.
Note: Whenever you’re setting up for a presentation you’ll always have at least one hardware problem to overcome.