Actually im thinking part of his pc was already beyond saving...

Wow. He definitely dodged a bullet there.

The probability is you fried the power supply - Not the most expensive subsystem in the computer but still a pain and it could be expensive if you have someone else do the replacement or you aren’t technically competent. That’s not supposed to cause damage but sometimes it does… If you have something to say, just get in their face and open your mouth and say it instead of having a hissy fit and damaging things. That’s lesson number 1… Lesson #2 is compromise. Neither person in a relationship is really in 100% control. You always have to work things out and compromise instead of trying to force things to be the way you want. This is every bit as important as lesson #1 if not more so… Frankly my sympathy is with your ex.

Being involved with someone who destroys my property in fits off rage? I doubt the monetary loss is the reddest of the flags here.

I am sure at this point it's not about the specific part, it's the principle of damaging his computer ... what if you had trashed the motherboard or the primary drive? All the apologies in the world can't fix that.

You're a complete bitch for that and he's stupid if he didn't break up with you. This makes me appreciate laptops a little more.

How exactly did you see that going in your head, tbh? If you can't have a civil conversation when mad, maybe you're not mature enough for a relationship.

Next time just shut off the router.

I understand that you could have gotten extremely frustrated by his incessant gaming. The fact that he broke up with you probably just hastened the inevitable: He is addicted to games and he was never going to give you the attention that you deserve, so you would just have continued in an unhappy relationship. Some things just bring out the worst in us, and if you were put into a situation where you became that person who has to yank out power cords then it is probably best that you part ways. You deserve someone who can't live without you and who actually values having you in their life.

To be fair to OP she thought she was just forcing it to turn off. A bit dramatic but I could see a reasonable person doing this given the possible situation.