How To nokia lumia 730 hard reset

How To Hard Reset Remove Pattern lock Nokia Lumia 730 Smart Phone. if Your Phone is not working properly device is hang slow working you need to hard reset. it's very simple process and solve your device problem.
first you need to backup your all of impotent data. after hard reset all data will be lost. 
Now Turn Off Your Device than pressing volume down key and Connected Charger or Usb computer after 10 second you will see exclamation mark (!) if you press any others key device will be turn on.

Now pressing key the one by one
1. Volume Up  
2. Volume Down
3. Power
.4. Volume Down
Done