Nikon d3100 showing no sd card inserted message even after inserting it..please help

Hi Have you tried resetting the camera back to factory settings? This should clear up any problems...if it doesn't it may at least let you know what the problem is? Also...do not use an SD card no bigger than 2 gigs, What is thee display showing? Make sure the date and time are correct! Get back to me if you need any more help...Thanks...John,

Some of the pins at the memory reader are damaged. Or the PCB is faulty. Both scenaries need to go to a repair center.

Have you formatted the card in the camera before you star taking pictures?

If a pin got damaged, then a trip back to a Nikon repair center is the only way to properly repair it. It may be still under warranty if it's less than 3 years old.

If you want to do the replacement yourself you can get the door for about USD 15.

Remove the SD memory card from the camera and insert the SD memory into an USB memory card reader. Plug the memory card reader into the USB port of your computer, the computer will see this as an external storage device, you can then open the image folder and copy the photos from this folder to your computer.

The battery ships in an uncharged state. Slip the battery into the charger until the it indicates it is fully charged. Install into the camera. The camera should power up without an SD/SDHC/SDXC type memory card installed - and should flash [-E-] in the viewfinder alerting you to the fact that no memory card is inserted.

sd card slot damaged. Change slot with new

you should try formatting the memory card to something different. because the same problem happend on my psp.

Good day,

This is a common problem that many people experience with their SD Cards.
It is normally an easy fix and you can follow a method that I posted on my tips here:

http://www.fixya.com/support/r7042428-sd_card_write_protect

Please feel free to let me know if this was helpful!

Regards