SanDisk Ultra IICF 2.o GB

I had a similar problem with my Fuji camera and reinstalled the software. This fixed the problem, but it happened 2 or 3 more times. After the 3rd time I bought an inexpensive media reader and now use that to transfer pics onto my PC.

You need to format new cards in the camera before using.

format the card. original canon or sandisk works fine.

This is because the Coolpix 2100 and 31000 models cannot handle a card of that large a capacity. As it's only a 2MP camera anyway it doesn't need it.

The Coolpix 2100/3100 will usually accept up to a 512MB CF card, and 1GB Lexar CF cards up to and including the 24x WA write accelerated (although write acceleration itself offers no benefits on this camera). With Sandisk only a plain old and now obsolete SDFB allows a 1GB card to be used and the regular Sandisk Ultra (not Ultra II or later) will only work up to 512MB.

The camera was discontinued long before these much larger CF cards were released and Nikon no longer actively support the product so no firmware updates will be available. The hardware wouldn't support such cards anyway.

Compatibility chart for CF cards address below:-

http://nikoneurope-en.custhelp.com/app/answers/detail/a_id/26030/c/241/r_id/127673

This is because the Coolpix 2100 and 31000 models cannot handle a card of that large a capacity. As it's only a 2MP camera anyway it doesn't need it.

The Coolpix 2100/3100 will usually accept up to a 512MB CF card, and 1GB Lexar CF cards up to and including the 24x WA write accelerated (although write acceleration itself offers no benefits on this camera). With Sandisk only a plain old and now obsolete SDFB allows a 1GB card to be used and the regular Sandisk Ultra (not Ultra II or later) will only work up to 512MB.

The camera was discontinued long before these much larger CF cards were released and Nikon no longer actively support the product so no firmware updates will be available. The hardware wouldn't support such cards anyway.

Hi! I just had the same problem with my Sony A100, when I tried two different CF cards. I was getting the same error message as reported above: "Unable to use card" then "Format?" then that format fails. Thinking the camera is broken, I checked online camera repair sites and also called Sony directly. Sony's flat rate, and that of PrecisionCamera is $228 to fix CF card failure. Then my daughter said, "the CF card in my room works fine in the camera" - and lo and behold - it does. The CF card that works is brand PQI and is marked Hi-Speed 60 2Gb. The cards that do NOT work are marked SanDisk Ultra II 1.0Gb and SanDisk 128 Mb. So my advice is, before you give up on the camera as broken, try a number of different CF cards first.

The second cause of CF failure is if someone has pushed a CF card in the wrong way. That can bend one or more of the tiny metal contact pins in the CF socket in the camera. Look carefully to see that all the pins are straight up. [I don't know how one can straighten these pins, or if the whole socket would need to be replaced...but at least you can determine the cause of the CF failure.]

Best regards - Michael

try formatting them first

It sounds like your Dazzle is not compatible with the sandisk. Maybe the Sandisk CF UltraII card have a new update software in it.

Artgirlny

Check your memory card to see if its locked!

Jerseygirl98 does your computer reckonize the card if not it may be a bad card. That does happen..I the computer does right click on the card and rename it .JERSEYGIRLCAMERA
THEN LOOK FOR IT..Try to format the card in the computer..No luck just get another card..