There was an incident a week or two ago, where one chess player demanded brand new computers to be unboxed before the chess match[1] begins. Every day of the match, to unbox new computers, because he didn't want the software to be tinkered with by no one.

So they unbox the computers every day, and they have to wait an hour or more, a team of 10 people, for windows update to finish and start the match. Windows update could not be cancelled by the user anyway.

I thought, if he doesn't trust software from other people, maybe he could carry with him an OS in a flash drive the size of a gum. Also, linux was not traditionally great for games, but a chess game can be supported even on a live boot.

[1] Kramnik vs Jospem chess match.