Hard Reset - Xolo Era HD

Procedure

1. Press and hold Power key (2 seconds) after that immediately Press and hold Volume Down until Android System Menu appears
2. Select "Wipe Data / Factory Reset" from Volume Down button and then Press Power key for confirm 
3. Select "Yes — delete all user data" option using Volume Down key and Press Power for confirm 
4. You will see Wiping data...., Formatting /data..., Formating /cache... wait until finished 
5. Select "Reboot System Now" wait for device start in normal mode (note : Wait few minutes do not unplug battery) 
6. Congratulation you are done