Since two different lenses work on another camera body, the problem is most likely with the D3000 body rather than the lenses. If you’ve already reseated the lens and cleaned the lens/body contacts carefully, there usually aren’t many user fixes left for this kind of communication error. At that point, the practical next step is to have the camera inspected by the retailer or Nikon service. If you clean contacts again, use a proper camera-safe method and a lint-free material rather than anything abrasive. But if the error persists across multiple known-good lenses, professional service is the most likely solution.