Installing new RAM

I found a link the other day, while reading some article, to a website called Computer Stupidities.
Reading a couple of the stories there reminded me of something from university.
I don't remember all the details, but it was while I lived in residence, during my second year. Our little group had become rather well known in the student residence as being tech savy, so everyone and their dog would come knock on our door asking for computer help. At one point it got so bad, we put a sign up on the door saying "No computer help unless you look like this", with a picture of, I believe, Milla Jovovich.
While Milla Jovovich never knocked on our door, we did break the rule and help a few particularly attractive undergraduate women with their computer problems.
Anyways, the incedent I've been remembering was before the sign went up. I don't even remember how it originally started, but some guy came to us for computer help. I ended up going over to look at his computer, and eventually found out that the motherboard was fried. After enough talking to him, I finally figured out that he had installed new RAM in his computer. By himself. While it was on.