A major BOOO, Got all the parts in and went to install windows and boom error codes flash buy too fast to read, Go through all tthe steps trouble shooting and I got a bad stick of ram..... DOH used one stick and got windows 8.1 installed and got to play around with it for a while but I have to pull it out and send it back boooo so I'll be without my new system for another week or so, at least I kept my old system up and running so no real down time but so wanted to be gaming on the new one.