Blackberry Death ( Nuked Blackberry )

someday my sister gets problem with her phone blackberry curve. Her phone totally dead and cannot turning on. If power button pressed just red LED appears. Then we try to charge it. When charger just battery indicator appear on it monitor and don't running likes usually. this's called nuked

So, i asking in google again. There i found an good article who suggest that :

1. unplug the SD card
2. unplug battery
3. charge it ( in empty battery condition )
4. wait some minute ( maybe 2 minutes )
5. then, plug the battery again...
6. if success, the phone will restart itself.

I tried this metode for 5 times and success.... thanks, hope can help you...