1- Charge Micromax A310 upto 70 percent.
2- Switch off device.
3- Press & Hold Power and Volume UP key.
4- As soon as Micromax logo appears, release power key and hold Volume UP key only.
5- Android Logo with exclamation Mark appears, Press Power key once to enter recovery mode .
6- Select Wipe Data/Factory Reset using Volume down key & Press Volume up to enter.
7- Select Yes-delete all user data using Volume down key & Press Volume up to enter.
8- After wiping of data has been completed, it will ask to reboot system now.
9- Press Volume UP key to reboot.
10- Code or pattern has been reset.