This is a common practice among gamers: immediately powering down your PC the moment a game tries to auto-save your progress, either by holding down the power button, yanking the plug from the wall, or sprinting to your home’s circuit breaker panel and flipping switches as fast as you can. The impulse to immediately cut power to your PC while your game is being saved is a powerful one, which is why so many developers feel the need to warn you about it every single time you play.
Heed this incredibly useful and relevant warning, and wait until the game has finished saving your progress before plunging your PC into absolute darkness. We know it’s tough, but resist the urge.