Why won't my Nikon Coolpix turn off?

I have a Nikon Coolpix L18 and it will NOT turn off! I keep pressing the on/off button but nothing happens. When I take the batteries out and put them back in, it turns off, and then it turns back on. But I cannot for the life of me, get it to turn off! What do I do?

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My nikon coolpix s630 won't upload pictures onto my computer?

It makes the noise telling me that the usb was plugged into the computer but for some reason it wont let me copy pictures from my camera and save them to an album. This camera is only about 3 weeks old and when i first got it and uploaded it was fine.

can anyone tell me why my computer will not find the pictures?

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