Had a Day One Xbox One not turn on last night. Power cycled the brick, tried every guide. Spoke with two different Microsoft people - they said console was defective and out of warranty. Wanted $125 to send me a refurb unit with a 90 day warranty.
Went to local GameStop today and they verified it was the power block that was defective (imagine how pleased I would have been to have spent $125 on nothing) and I ended up getting $225 in trade in credit.
Here's the catch 22 - I've had an Xbox since day one - every single one. My first Xbox never gave me any issues. Then I had 4 different 360's (Normal, Elite, Gears Slim, Slim) each of them gave up the ghost. Now my Xbox One (power brick) gives up the ghost. Microsoft did zero to try and keep a customer. After paying for Xbox Live since it's inception they gave me incorrect advice (twice), and refused make amends even though they could see my Xbox history.
It's a shame that this is how they treat fervently loyal customers.