Please follow the below steps to hard reset HTC Desire without powering it on.
Please follow these steps to perform factory reset without powering it on.
Performing a factory reset using phone buttons
If you cannot turn on your phone or access the phone settings, you can still perform a factory reset by using the buttons on the phone.
- With the phone turned off, press and hold the VOLUME DOWN button, and then briefly press the POWER button.
- Wait for the screen with the three Android images to appear, and then release the VOLUME DOWN button..
- Press VOLUME DOWN to select CLEAR STORAGE, and then press POWER.
- Press VOLUME UP to start the factory reset.
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