Nokia lumia 920 stuck on running gears.

I had a Nokia Lumia 920 stuck on running gears for more than 30min after a atempt of hard reset.
The way I found to resolve this problem was:

 I rebooted the phone by holding Volume Down + 

Power.  Then, when it was at the AT&T Screen I pushed 

the Volume up .The Gears spinned for about 2min. and 

then it rebooted to the "new phone" startup screen.

If works ,say thank you Ninja!