My HTC 8x restarting in a loop with exclamation symbol, how can I fix this?

[cyphermadhan]

My HTC 8x restarting in a loop with exclamation symbol. Please help.

I plugged my headphone to hear music suddenly my volume got down.. i couldn't increase the volume up. every time i increase it automatically decreases so i thought of restarting. When i switched off and switched on i get my htc logo first then a exclamation symbol in a black screen. This process continues in a loop.. Wat should i do. Please help me.

 

[charlatan1978]

Re: My HTC 8x restarting in a loop with exclamation symbol. Please help.

I would start with trying a soft reset (hold volume down and power button until phone vibrates).
Failing that a hard reset.

 

[Mr Lebowski]

Re: My HTC 8x restarting in a loop with exclamation symbol. Please help.

That used to happen with my Lumia 810, I used to pull the battery and then put it back in and the exclamation mark would disappear. I saw no adverse effects as a result of that action.