I have been given a Coolpix P6000 which I am still experimenting with. My latest pictures contain some images which have an NRW extension instead of JPEG and these pictures cannot be printed. How can I change the extension so that I can print off the picture.

It sounds like the date memory battery (if your camera model has one) is dead. If you don't see info in the manual, look for a tiny slot in one of the camera's access points like where the SD card or larger battery is and see if you see it there. It will be a thin, tray that contains a button battery. If there isn't one then the camera uses an internal battery that would have to be replaced by Nikon.

Those are nikon raw files. What is an NRW file

for a digital camera to view an image they need to be in a folder named DCIM
so when you are in windows it should look like (D:)\DCIM
your drive letter may not be D it is random

You're in playback mode and haven't taken any pictures. Put the camera in photo mode or video mode.

DPI (dots per inch) is an output specification and is irrelevant to the camera. The camera puts a value into the field simply because it has to put something there. The DPI is set by the printing program when it prints a picture. A picture printed at 4x6 will obviously have more dots per inch than the same picture printed at 8x10.

The issue is with your Nokia electronics inexplicable operation. You could try transferring the files to your hard drive, and using the run command and dos change command change the file extensions to .jpg in lieu of the bogus .nrw.

And if memory serves me correctly, use *.* with the command to signify all the files rather than changing each individually. PIA!

U might have to get another camera if all this extra work is excessive.

http://support.nikontech.com/app/answers/detail/a_id/13948
http://www.nikonmall.com/category/instructionmanuals

Check page 143 in your manual. Auto Bracketing does not work when in Manual mode or when NRW is selected by itself or in conjunction with Fine, etc. Hope this helps. I'm trying to find a way to be able to enable Auto Bracketing in Manual Mode.

...Derek
801.305.3606

I think you may have deleted the folders from your memory card.  The camera could be looking for the folder to put the photo into, and this error comes up instead of one about the folder.

Hi:
When you transfer all the files, the movies should be transferred as well.
Open Windows Explorer to the folder you saved the files to.
Notice the file names by using either details or list in the view.
Other operating systems may differ slightly.
The movie files should be with .mov extension.
The jpeg or picture files should be saved to .jpg extension.
Some cameras will save to a different extension if the highest resolution is used, such as .tiff or other.