So lets try this and see if it helps.
Hard Reset using buttons:
Press and hold the Camera + Volume Down + Power until the phone vibrates. Then release the Power key and keep pressing the Camera + Volume Down for a few seconds.
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My Nokia Lumia 920 shows the lightning bolt and gear icon. does not start and is frozen on that icon.
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So lets try this and see if it helps.
Hard Reset using buttons:
Press and hold the Camera + Volume Down + Power until the phone vibrates. Then release the Power key and keep pressing the Camera + Volume Down for a few seconds.
A HAD SAME PROBLEM TOOK OUT MEMORY CARD ATTACHED TO LAPTOP AND PRESSED VOLUME <DOWN> AND POWER BUTTON AND IT CAME ON
HAHA! I just tried again and it worked. After I released the power button, I just did a 1-2-3 count and let go. I did have cogs yet again, but it was for about 1-2 minutes. Then the phone shut down on its own and finally came up on the "welcome to windows" screen. SUCCESS!!! Thanks man, and many thanks to JACK COOK! GET 'EM!
Before this, I just got either a low battery symbol, the spinning cogs for hours (to the point of the phone overheating) or stuck at the lightning bolt/cog screen.
I've been having these exact symptoms. So going with this sequence, how long do you need to hold the camera and volume down buttons after releasing the power button? Also, do the cogs still appear for a few minutes or not? Very frustrating here.
So lets try this and see if it helps.
Hard Reset using buttons:
Press and hold the Camera + Volume Down + Power until the phone vibrates. Then release the Power key and keep pressing the Camera + Volume Down for a few seconds.
This worked absolutely perfectly. Nothing else I was trying worked. The key difference you mentioned was to hold down the volume down and camera buttons well after releasing the power button. Before this, I just got either a low battery symbol, the spinning cogs for hours (to the point of the phone overheating) or stuck at the lightning bolt/cog screen.
Thank you very much! You are a phone-saver!