A:AnswerSadly.. you will or at least should take it back. It isn't worth messing with. Those PCs are junk. I had 2 that failed for different reasons in a 2 month time span. IBuypower PCs are better!
Good luck
A:AnswerDdr4 if I'm not mistaken, just go check the specifications of the pc you should see it right above where you can check the ratings and reviews!
A:AnswerYou plug in all of those items into the usb ports available in the back or top of the tower. As for the headphones they should be plugged into the jack provided also in the back or top. Yes, it does come with Windows 10.