Micromax A100 HardReset
 

Micromax A100 HardReset

Use Vol Up+power key to go to the reset menu.
Use Volume keys to navigate.
Go to factory reset option.
*LONG PRESS* volume up key to select and leave.
confirm Yes by *LONG PRESS* volume up key and leave.
after that select reboot opiton.

factory set done

Micromax A100 HardReset

Use Vol Up+power key to go to the reset menu.
Use Volume keys to navigate.
Go to factory reset option.
*LONG PRESS* volume up key to select and leave.
confirm Yes by *LONG PRESS* volume up key and leave.
after that select reboot opiton.

done

I think there is also a option in the setting menu, but is it for hard reset.

Micromax a101 hard reset, succsessfully done.
 

Press and hold volume up and power button together for a 5 seconds, u will get android logo, then touch triangle shape logo on the feather touch bottom end, now u will get wipe and factory reset, then select it by triangle shape button, and wait for a 5 minutes. now it will done.:)