xbox360

Hi I used a YouTuber called modern war fare to mod the Xbox I installed the nand wire then I read the nand 2 times to maker sure they were the same using a j-runner chip then I installed the resistor and diode then when I tried turning it on it would display as I needed to retrieve the cpu key Ik my soldering is bad but I don’t think it should affect it

hi my jasper xbox 360 wont display i changed the resistor and it stays on ,but still doesnt display i dont know what to do so any help will be appreciated