1.How I gonna root my nexus with broken power button???
Go to this thread..
(ROOT) Any version of android (kernel exploit)
Download the script..Run it..
Go to market..install Superuser..
Install ROM Manager- Flash CWM..
Yes..You just Root your nexus with CWM Recovery...Congratulation
2.How I gonna enter Recovery mode??
Just Download Quick Boot
Here you go....Flash!Flash!Flash!
3.Eventhough I can root it..But my power button's have lost...How I gonna make my nexus screen off..
just download Screen Off and Lock
Put it on your home..just tap it to power off..
If you want make it more easy..
Just remap you power button to search button..
Download button remapper
Now your search button will have power button function except wake the phone..
4.Great..Now How I want to wake my phone with broken power button??
Easy..with ICS already in our nexus..
Go to Settings-Security-Screen Lock-None
Now you just wake your phone just by pressing power button..
5. Can I take screenshot with broken power button but without paid screenshot apps??
Yes.. If you already remap your search(or which button do you like) as power button..Me remap search button as power button..
Just volume down+ search button...
6. How to flash using recovery..
Move up and down using volume button..select using search button..
or if you want more easy...flash Touch Clockwork Mod Recovery 18.104.22.168
7.If my nexus have to pull battery or battery die..How I going to power on it???
All you have to do is plug in the phone to an AC charger, and the phone should come on.
Sometimes, however, it will show the boot logo, then go to a screen showing you your battery percentage, and not actually boot. No problem. Just pull the battery and unplug. Replace the battery, and while holding the "x" button on your keyboard, plug the phone back in .
If not working..
plug you nexus to USB cable..then restart your pc/laptop without unplugged your nexus..it will power on automatically...
Or if not working...refer to this thread.