If you are unable to power on your Huawei Ascend Y350 phone, there is an another way to
perform a factory data reset by using hardware keys. This process is known as the hard reset.
Warning! All data will be lost! Please make backup first!
1.Power off your phone
2.Press together volume up + power key until Huawei logo appears on screen
3.Select with volume keys "wipe data/factory reset"
5.Select "yes-delete all data" and press power key to confirm
8.Wait until the phone restarts
That's it!
For more details watch here video tutorial.