My Casio Exilim S770 won't turn on or charge in the cradle. The lights on the cradle won't even come on. I bought another battery charger and even another battery, but the camera still won't come on. When I put the charged battery in, the camera begins to heat up and even feels very warm to the touch; but will not turn on. I've taken the memory card out, checked that the battery is in correctly--but still no luck. HELP!

I had a similar problem with mine but these were my symptoms and how I resolved it.

Firstly the camera would not switch on but I could charge it so that the green light appeared on the dock. However this was not enough to start the thing and sometimes the lens would pop out only to pop back in again. To repeat these events I had to re-charge the camera and go the the whole process again.

Now and again I could get the date set menu if I started it when in it's dock but I could get no further. To get it to do it again involved more charging and I also found I had to endlessly remove the battery and put it back in again to get any sort of life. However the camera never fully came on.

I luckily solved it by doing a hard reset approx 20 times mixed with taking the battery in and out. I left it to charge overnight and then I got the date menu back. This time I was able to progress through the menu system and do a software reset which cured the problem and now it's working again.

I think the key is removing the battery and doing hard resets. If you can do that you may get the menu up and that may get you through this. Maybee I was just lucky but I once I found out about this hard reset I knew I would be able to solve it.

Good luck people
Alan

Wow I can't believe how many people this happened to. I have the same camera and is under warranty but they said would not cover the battery. I got on Ebay and purchased another battery that came with a charger and was only 12.99 for the pair. The battery is an NP20. It is not the camera or the battery it is the charger. Apparently there is a problem with the charger on this. Trust me get a new charger and the battery will charge and work. Thanks

OMG!!!! I had the same problem. No matter what I did the camera would not take pictures the screen remained black. I could view pictures on the cradle and mess around with the menu but when I removed it from the cradle and pressed the PWR button, nothing. The lens popped out and made a sound but the scree was still black. I used the reset method that Jillianne described and it worked!!! At first it felt like a lost cause but after you replace the battery PLEASE leave it on the cradle to charge. Even if it's green! Leave it on for at least 20 - 30 mins and it'll work!

Haha, I actually just posted a question and then found a solution on another website!  Here is what the post said to do:
"Remove the battery, then press and hold on the power button for at least 10 seconds. Then replace the battery and turn on. This is a hardware reset that can be done on most electronics."
No joke, right after I did this, my camera not only turned on but also started charging when I put it back on the cradle!  I hope this helps some of you who are having the same problem!  :)