How to factory reset HTC One M8? How to wipe all data in HTC One M8? How to bypass screen lock in HTC One M8? How to restore defaults in HTC One M8?
The following tutorial shows all method of master reset HTC One M8. Check out how to accomplish hard reset by hardware keys and Android 5.0 Lollipop settings. As a result your HTC One M8 will be as new and your Qualcomm Snapdragon 801 MSM8974AB v3 core will run faster.
How To Hard Reset HTC One M8 - video
HTC ONE M8 Bootloader Mode and Factory Reset - video
Hard Reset will erase all of your data
All described operations you are doing at your own risk.