I am sorry to hear that. It may be that the camera is simply defective or 'broken', and needs to be service-repaired. But, please let me know a bit about the camera's history:
- What is the maker and model of your camera?
- How old is the camera? in months or years since you bought it.
- Has the camera been dropped or otherwise subjected to mechanical shock(s) in its lifetime?
- Has the camera been operated in or subjected to, temperatures below 32 degrees F (freezing point) or above about 100 degrees F ?
- Has it ever been subjected to a humidity higher than 85 % or gotten wet ?
My first suggestions for a 'dead'-seeming camera are these:
Then try cleaning the terminals in the battery compartment, after removing the batteries, first by rubbing off with a fresh pencil eraser, then by wiping the terminals off with cotton swabs moistened in rubbing alcohol, then letting them dry off for 5+ minutes with the battery compartment door open, then try turning the camera On again.
How old are the battery or batteries in the camera, please? If over a year, then you might possibly have a battery/batteries that are getting weak. Rechargeable batteries do get weaker with time, and eventually fail to deliver enough power to start up a device like a digital camera; they then need replacing. The replacement battery needs to be charged up for 6+ hours before its first use, owing to its having been on a shelf for a considerable time.
Let me know, please, and I will advise and help you further. Thank you.