The security updates to the Windows operating system and virus protection programs interfere with the camera connections. I have seen many cases where the connection worked one day and would not work the next. Some manual set up may be required to get the camera to connect.
With the camera on and connected with the usb cable, on the computer, go to [Start] [control panel], (in windows 7 select show all options)[scanners and cameras] and try to connect through the wizard. During the Wizard process it should give you the chance to choose the software to open upon connection. If unsuccessful, the last place to look is in the device manager. Go to back Control Panel, double click the System icon and select Device Manager. Under the heading Imaging Devices you should find the camera, possibly with a yellow triangle with an exclamation point. When clicked on it should tell you what the problem is. You can also delete it and allow the computer to try to provide the correct driver. If the camera does not show up, go up and click on Action and select "Scan for hardware changes". If you are trying to use the Nikon Transfer software open the program and try to connect.
While not the most popular suggestion, this one depending on your computer configuration may be the only way around the problem and one of the two cameras photos may need to downloaded as follows. As an alternative, because of multiple compatibility issues with the camera connections and current operating systems, my other suggestion is to get an inexpensive usb memory card reader. You can take your memory card from the camera and plug it into the computer. The card will show up as a removable drive in "My Computer" and you can copy the photo files to a folder on your hard drive and view and print them from Windows or import to Easyshare. Personally, I prefer this method due to the simplicity and reduced wear and tear on the camera.
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