So I have seen them done but half external and never 100% internal. (maybe you guys know of one) so I thought I would give it a go. I had the plan for this in my mind for ages. When my big brother bought the new xbox one, I decided to hack the slim. Back in september last year I decided to buy the stuff. I made a video and put it on youtube. (it's 13 minutes lol) Why Did I choose this all in one cooler? Because the block was the slimmest compared to all the others in the market, the pipes were extremely flexible, and I like the way it looked Anyway I started yesterday, and basically it's assembled today. lol. 1) Started opening it up. 2) My box of watercooling bits which has accumulated over a long period of time. 3) Exposed. 4) I always make a mess. Test fitted the waterblock/pump combo and fitted in the first twin 40mm Radiator. 5) Managed to find some long thin bolts which worked perfectly for my use! No need to drill through the metal case. These were also long enough. 6) Better view of the motherboard and the cooling setup: 7) I did test it like this aswell but I didn't like it and the air flow would have been a problem. I really want everything as flush as possible so to put fans on the top would be quite a bulge. 8) With the CD drive in, to route the pipes and cut them to size. 9) Originally I was going to mount the Side blowing fan on the second rad but decided against it in the end. 10) And the clear case like this. 11) Pic. 12) After endless messing round with trying to fit the 6mm blue tubing on the rads, I decided to just go for a normal Clear tubing which I found in one of my drawers. This was actually more better for flexibility! I put on some spare anti kink coils on that I had. Would have been better in blue? Also added my T-line for the fillport. 13) Potentiometer: 14) Cutting time! -For the rad. 15) Done/ 16) Fitted the rad too to test. 17) Cut the second rad casing to make room and easy installation of the 40mm Fans. 18) Installed! 19) Wired up the Pump to the original fan adapter. 20) More test fitting! Progress! I'm surprised it's taking me this quick tbh. 21) Linked up to my PC and motor + Fans run perfectly! Tested the pot and that works too! Awesome! More pics + videos will be uploaded later.