Huawei Ascend Y540 hard reset using buttons
1. Turn off your Android Huawei Y540 phone and pull out battery and reinsert it after a few seconds.
2. Press and hold both Volume UP + POWER buttons for about 15 sec. until Andorid recovery menu comes up.
3. Select Factory reset /wipe data. (scroll down with VOL down.)
4. Select with power. (may changed to Vol UP)
5. Scroll down to Yes -- delete all user data. Press power to confirm.
After all is done press power to reboot system now.
After data wipe has completed you are done. reset Huawei Y540 done.