At this point I pulled the HDD and Sata adapter out and proceeded to install them on my backup xbox, the same thing happened as above. I have come to the conclusion that one of both parts were faulty and will bin them.
What I would like to know is if there is any solution to getting both xboxs functioning again. The consoles were not on long enough to overheat so I think this may be a false flag and it is something on the motherboard that needs resetting? Has anyone else had this problem and solved it? I am handy at soldering so Im not afraid to start replacing components etc.
Any help would be greatly appreciated

Thanks!