This looks good. If I didn't already have my own system, I'd totally use this one.

I'd remote-link to his or her computer and perform a full checkup.

I discovered this for myself a few months ago. Works like a charm. I now use this method for my IT clients. It's a very common issue.

This is a fascinating solution, but I think getting yourself a USB splitter is better.

I actually know someone this happened to... minutes after picking it up from Best Buy. People are so... untrustworthy.