Greetings!

Email is the way to go. I would not worry, the quizzes are usually quick and direct. Basically, if you are comfortable working in a computer (i.e., won't spill high proof beverages inside while it is plugged in), you can usually do it. In this particular instance, you can check two out of the three plugs without even breaking the seals or unscrewing anything but the fascia. It is that last plug that is the hardest. Also, one of the troubleshooting tips would be to move the drive to another connector.

Basically, if you are comfortable taking a computer apart (hard drives, cables, etc.), you will be fine.