Getting Pictures Off Camera

I did try these methods and no solution. When the camera is turned while still attached to the USB cord, Canon PowerShot A460 message box says its connected and there's a choice to select a program to launch this action. The thing is there are no choices and all I can do is click Cancel. When I go to Control Panel my Camera doesnt show up unless its on, if its off it disappears. I get the message "Scanner or camera in use, please try again later" if the camera is on. If it is off I get, "The computer cannot detect the scanner or camera. Please make sure the device is turned on and is properly connected to the computer. If the computer still cannot detect the device, open Control Panel, click Scanners and Cameras, and then click Add Device". I tried this and my camera doesn't show up whether on or off. My USB cord works with my MP3 player and the camera's software works fine. Maybe I should just buy a new USB. The camera still works fine I can take pictures and movies. I just cannot seem to get them on my computer. Thanks for trying to help.