To Restart/Reboot your Blackberry without taking your battery out, complete the following steps.
- Press and hold the Alt key (1)
- While holding down the Alt key, press and hold the Right Shift key (2)
- With both of those buttons still pressed, press the Backspace/Delete key (3)
- When the screen turns off to indicate that the BlackBerry smartphone is restarting, you can then release the keys you have been holding.