Hi guys, I'm usually pretty savvy at fixing these problems myself but I've been searching forums for days looking for a solution that works for me and nothing! So any help is much appreciated. The problem is as follows, My JTAG RGH (SLIM) turns on but will not boot. It won't boot with HDMI or any other input. The green light goes on, and the cool runner red light is on, but it won't kick in and start the bloody thing. Booting into Xell won't work. Weirdly for some reason every now and then the xbox will boot and run properly. I have tried so hard to understand why, but it seems to just decide to work sometimes. Originally I assumed the xbox was broken and left it for months in storage, then one day plugged it back in, and for a short while much to my surprise it worked. My power brick and supply seems to be healthy. I try with and without internal HDD and external HDD yet it seems to have no effect. It truly seems a miraculous occurrence that it works very occasionally, but i would love to understand why and fix it.