I have a Canon G9 that got no power for no reason. From contacting one shop, they said it was not common. I called Canon, what do you know, they never heard of it either. I ended up contacting a third shop who just does Canons, they said they get the G7 and the G9 models in by the truckload with that problem. Further research showed me how common it is, two screws come loose in the camera and cause a short circuit, leaving the camera with no power. The repair cost me under $100 which was good and the place I used even serviced and cleaned the entire camera and did some type of corrective thing to those screws that come loose. I have it back now and it works excellent again but I’m mad that I had to pay when this is clearly a design flaw in the G7 and the G9 Powershot cameras. If anyone needs to have this fixed right, I used this site: www.camerasandparts.com I tried yelling at Canon first and got nowhere because my warranty was up. That place does a great job and you can get the parts there to if you want to tackle it yourself to. If you repair it, you need to do some type of correction or the problem will keep happening in time. If they fix it for you, the correction is done on every G7 and G9 they service from what was explained to me. I will never again buy another Canon. They make a great camera but they don’t realize that when they make a mistake, they should help the poor customer and not the rich company as Canon is. I suggest you all don’t buy Canons again. Canon is a company that won’t admit it’s product is faulty. How can so many people have this loose screw problem and then no power and Canon won’t help? I’m not buying that story, it seems more like they know of the problem and would just rather turn their back to it. Ask yourself what kind of reputable company operates like that!