I can't imagine how/where you got to use a laptop at -40C, did you made a mistake or my imagination is limited? I also have bought a 2012 era Macbook for testi

I can't imagine how/where you got to use a laptop at -40C, did you made a mistake or my imagination is limited? I also have bought a 2012 era Macbook for testing on OSX, the screen has some artifacts, battery is dead.