My Xbox one went down last week with no power. The orange light was on the power brick but nothing was happening when pushing the console button. Done the reset procedure and still no cure. Having read olinda83's post from May 21, I went to try their suggestion and as soon as I pushed the button to left side of the console i heard like fan noise slow down and the console powered up!! I have no idea exactly what went on I can only state that I pushed the black button on the side with everything plugged in. I've just switched the console on and off 5 times and it seems to be working as normal. This may help or it may not, I'm only explaining what happened to me....