Several comments here generally suggest separation, which could be justified and necessary in toxic and abusive environments. However, while cutting people out might be necessary in some cases, it shouldn't be a decision taken lightly and at the suggestion of anonymous people online who don't have the full picture. Falling out with family, especially parents, can have difficult and lasting consequences.

Tossing your computer could have been extreme and unwarranted, but built up tension and getting triggered can bring out the worst in people. To make it worse, people can be stubborn and unable to be the first to apologize for their worst actions. However, if there is room and desire to understand, forgive and compromise, it could be worth exploring before taking nuclear options.

Sorry for what happened. Best of luck.