My desktop machine caught fire one day while I was using it. The graphics board connector started burning. I immediately pulled the plug on it, which put the flames out, and put the machine outside.

When I got the machine repaired, I bought some sheet steel and it now sits on that instead of the wood floor. The case was metal, so I was lucky there. I'll only be buying metal cases for my desktops from now on.

I was very lucky I was in the room when it ignited.