Nikkon Lens works on Manual only now.

The non-functioning of the camera can be a fault in the shutter, zoom or auto focus sections and may be due to the failure of the Main control system or the drive. A simple was is to reset and we can try by removing the battery and card for some time. Now replace only the battery and while switching power ON, tap the lens hood on the palm of your hands so as to disengage any dirt or mechanism being struck. You can spray a degreasing spray on the lens hood sides and also assist the lens as it tries to come out, attempt to pull it out slowly while powering ON the camera. Also in some cases you can slid a thin film/paper on the lens hood sides to wipe out any dirt.

Tips to open and check for common faults: http://www.youtube.com/watch?v=v2Mj3Qp3xYU&feature=related
Use some air to blow between the lenses to dislodge any sand particles struck inside. Unless you are familiar with handling of small devices must you try and open. If so check the voltage on the motor drive check the auto focus and Zoom drives, it must be free with manual movement. If jammed the motor can be removed and released. If none of these works then you can think of taking consensus with the service centre.
Get estimate before you decide. It will be good to have it checked at the authorised service as you do not have to run around for spares.

Hi,
Sorry to hear about your lens. If you are able to take pictures with a telephoto and any other AF-S lens, then it means that your problem lies with the standard lens. With standard, I assume you mean the kit lens. If you can take picture in manual mode, but not in autofocus mode, then the AF motor in the lens in not functioning, I had the same thing happen to my 50mm 1.4 lens. The kit lens is under 5 years warranty in the US, provided you are the original purchaser/owner of the camera kit.
Depending on your location, there are Nikon repair centers in Melville, NY and Torrance, CA.
Hope this helps,
Andrew

Fix your issue with these steps:
1. Try forcing the lens to rotate a fraction of a inch. This will sometimes help the problem. Or simply move the switch from M to A on the lens.
2. Try to switching to a single of the 11 auto focus points. Then try if there are specific points that are the problem.
3. If all auto focus points are fine, try updating the firmware or cleaning the sensors inside the camera behind the mirror. If a one or more points are out of order, also try cleaning the sensors behind the mirror.
4. Detatch the lens from the camera, by applying pressure on the release button and twisting the lens so it can be released. See picture
5. Set the camera selection wheel to manual (M), see picture
6. Turn the camera on, and start the liveView format. This will flip op the mirror inside the camera.
7. Take a dry can blower. Or if in lack, use an empty plastic bottle, without moisture inside, and use it to blow on the autofocus sensors.
They are located at the bottom under the mirror. NOTE Do not blow with your mouth, small amount of moisture will hit the CCD also located here.
8. Turn the camera off
9. Reattach the lens. Push the lens, white point to white point and turn the lens in place.
10. This worked for me, hope it also helped you ;)

For more solutions check Nikon D80 Manual

Hard to pinpoint the exact problem...
What lens do you have attached? Does it have a switch for M/A and M (auto focus/manual focus)? If it does ensure the switch is in the M/A or Auto Focus position.

On the left side of the camera on the face there are 3 positions, C, S, and M. Ensure it is not on "M" for manual.

Do you have your camera setup to only allow the shutter to operate when it is in focus?

the nikkor 18-55 lence is no longer u can chage the ed lence into vr lence is upcomming with nikon d3000 mout the coast of the lens is 200$

In full manual, yes it should.

Only reason the lens will not auto focus when you depress the shutter half way is due to either lens AF switch is set to Manual OR camera body's focus system is on M. There is 3 way toggle switch below the synch port around the lens mount. It should be set to C or S in order for auto focus to work. If all the settings are correct and even "AF-ON", next to rear dial doesn't activate auto focus then the issue maybe in the setting or the body itself. As for the buffer reading r27, I think mine displays r## regardless of burst/continuous mode.

Is the lens switched to manual as well as the mode dial. If the compatable lens is a minolta requiring an M42 adapter make sure that the protruding arm/rod is operating the shutter when depressed and that the adapter when fitted operates the lens when turned from auto to manual. Good luck.

The focus motor gear assembly likely has a damaged gear. It will need parts replaced.

No, it's not an error. What this display indicates, is the availability of the total number of photos you want to take. If the display says, "r06", then you are in JPEG Mode. If it says "r03", then you are either 1) in RAW Mode, or 2) have your Noise Reduction on (see FAQ #2). As you take a few photos in succession, you will notice the indicator drops by how many photos you took.