Please check the below steps to open your camera.
1. Is there a battery in your camera?
2. Is the battery fresh charged and full?
3. Is the battery polarity correctly placed?
4. Is the battery compartment door closed complitely?
5. Did anyone drop your camera before?
6. Did you control the battery voltage level?
7. Is your turn on button working correctly?
8. Did you try with an outer power supply?
9. Is there any light or movement on the lens and LCD shows anything?

I think you have a battery problem. Check the above list. You may probably find the problem.

I hope it helps.