How can how can I reset my computer because it doesn’t turn on

Follow the instructions in the Related Article you came from. Also, this has nothing to do with an iPhone. To get the best help here, you need to post in the correct forum. This should be in a Mac forum, and I'll ask the hosts to move it so you get better help.

If it can't be turned on there is nothing you can do. You might want to take it to an authorized Apple service technician to have it evaluated for possible repair.