brand new xbox out of box turns off then just turns it self off any ideas

Here are some other threads involving similar issues, I think we're narrowing the problem down to specific microsoft accounts (ones which were actively signed in while updating to NXOE), but so far I have found no surefire solutions.

forums.xbox.com/.../2087880.aspx

forums.xbox.com/.../2087844.aspx

Some power strips have that master on/ off port I would not plug into those plugs. Don't plug Xbox into home theater system plug or cable box plug. Also change the toggle in the power on settings in Xbox. I had quirky problems using toggle mode. Pick on
or off if possible or do nothing. I have a friend who had similar problem with old theatre system because it was slow to load the video signal when powering up. So Xbox wouldn't see re tv signal and thought the tv was off and it would shut down. Especially
when you have the auto off function enabled in Xbox.

Hey there. If you've gone through all of the steps here:
support.xbox.com/.../console-turns-off-unexpectedly you may need a repair. Make sure you run through the Troubleshoot your Power Supply thoroughly, and make sure your console is plugged directly into the wall, not a power strip.

If you still can't get it working, you can set up a repair at
http://myservice.xbox.com

Not sure what make is best i brought a seagate 5TB usb 3 off amazon for £130.

Really good easy to format just plug it in to the xbox 1 and it dose the rest its self.

Turns on when your xbox is on and turns its self off when you turn your xbox off.

I have the same problem trying to download Oblivion, tried disconnecting and reconnecting internet, turning x-box off and on again, turning router off and on again but it doesn't do anything, any ideas?