[Windows Central Question]

I was trying to reset my windows phone so i held the power and volume down button for 15 seconds till i felt a vibration. Then i held the volume down button for a few seconds and i was supposed to see a large exclamtion mark. I didnt see anything so i just continued the steps. I pressed the volume up,volume down, power, and the volume down button again which was supposed to make my phone reset itself but instead it showed a lighting bolt and a gear symbol for about an hour.

[Qais Abu-Hasan]

I saw this somewhere but I can't remember , did you charge your phone ?

[Harrie-S]

During your attempt to reset something went wrong so try the hard reset again.
Reset my Windows Phone 8.1 | Windows Phone How-to (United States)

If it still stays stuck use the Lumia Software Recovery tool
FAQ - How can I recover/reset/restore my phone software? - Microsoft - USA

And be sure your phone is charged and/or connect it to a charger.