Hi Ipobae,
Welcome to the BPD Family
I'm sorry about the broken computer and the blow up following, that's absolutely no fun (putting it mildly ). Clearly your sister was unable to manage her emotions and was projecting her bad feelings towards herself about the broken computer on to you.
... .I eventually had to leave the house because I did not want to participate in her outburst.
Leaving a bad situation is a good idea, staying and getting into an argument would have just escalated the situation.
... .I am considering not having any contact with her. I don’t feel it is my place to call her. I just need some opinions and handling the situation.Would this be me setting boundaries or would it be me acting like a BPD person?
I think this would be setting a boundary if you are doing it for your own protection and peace of mind. I think this would be unhealthy if you are doing it to punish your sister.
I also want to point out that there are lots of levels of contact with your sister between her dominating your life and never seeing her again. You could go no contact for a little while and seek support from a Therapist (or from members here) on better ways to interact with your sister... .take a time out, you could keep your contact via email or phone and not spend time with her in person for awhile, you could visit with her briefly in public places (out to lunch or for some coffee), you could have her over again but have a boundary around yelling at you... .if she yells you leave or she has to leave etc.
More on boundaries... .
https://bpdfamily.com/message_board/index.php?topic=61684.0https://bpdfamily.com/message_board/index.php?topic=167368.0I'm really glad you decided to jump in and post

I know you will find the members and information on this site helpful just as I have.
Take Care,
Panda39