|What is the make/model of the camera?|
Have you used a different charger?
You see absolutely no lights come on or blink when you charge it or attempt to turn it on?
Does it normally have lights come on when it charges?
If not, and it's completely dead, you may have to charge the battery fully for it to power on, which can take several hours. I suggest just leaving it on the charger overnight.
User Info Page Biography for full specs.