So the computer gave me another "fan not detected" warning. I pressed F1 to start. It's not really loud or anything. The only thing that was odd about it is that the computer froze right in the middle of what I was doing.
Yes, I remember you posted about the computer repair shop. If they replaced a fan but the computer still posts error messages, something mignt need investigating.
Personally I'm considering adding a reset button to my computer, but not sure exactly where to put it.