http://www.nikonchat.com/coolpix-zoom/

Zoom Lens Problems with my Nikon Coolpix 5900?
My digital camera refuses to capture a stronger shot. In the time it is stuck in the widest angle you can take. The zoom was working again within a few days I realized the problem. But after about 500 shots (he was on vacation) is to act again. Any ideas on what could be the problem?
Whatever the problem is that you do not want to mess with it. The 5900 was not announced until on 05 February, so I guess yours is still under warranty.
NIKON COOLPIX P100 (FULL 26x OPTICAL ZOOM)