This guide and the replacement power supply worked perfectly! We got the Xbox Series X when it was first released. In February 2023 it would no longer power on. I took it to two local repair shops and they both said it was too new, they couldn't work on it. Thankfully I found this guide and my 13 year old son and I were able to take it apart and put it back together again ourselves. It did help to have a Torx wrench that you can get some leverage with (L-shaped), especially for the screw with the oversized head. We kept track of the screws by writing the step number on a Post-it Note and sticking each screw on the note with a double-sided adhesive sticker. I wish we would have done this sooner!