Try holding down one of the button combinations below. 
	 
- 
Do one of the following: 
		  
 
- 
On some phones, some of these combinations may power the phone on into the 
			 Bootloader or 
			 Download Mode screen. Use the VOLUME buttons to navigate between options, and then press POWER to select an option. 
		  
Select 
				Reboot. In older phone models, you may need to select 
				Fastboot first, and then select 
				Reboot.