I was very young and I tried to upgrade the RAM on our gateway computer. I used the wrong type of RAM and fried (or broke) the motherboard. When I talked to gateway support, I think the person on the other end could tell what happened but took pity on me and allowed us to get a new motherboard under warranty. I had completely forgot that story until your comment here, thanks for the reminder on why I double check all the specs before rummaging around in there.