My computer restarted on me

I just wanna first off say that I never quit games for no reason. So I was in a game and I had a popup for something that required my computer to restart. I told the thing i'll restart it later. But then my computer automatically restarted itself even though I told it i'd restart later. Now i'm scared I got reported because my computer decided to be a pain in the ass. And I dont rage quit or anything. Only time I ever were to leave a game is if Riot was having problems or my computer decides to have problems. I'm sorry to those in my last game that my computer decided to be a bit of a twat.