2GB memory card but only 1GB available

The EX-Z750 uses SD cards up to 2GB in size. These cards should be available at just about any department, electronics, or office-supply store.

The EX-P600 is designed to work with SD cards (and microSD cards via an SD adapter). Your 4GB card is actually a microSDHC card and is not compatible with SD devices. You need to go with SD cards (micro or otherwise) 2GB and smaller.

Use a card reader.

It seems that you are using an SDHC (Secure Digital High Capacity) card. It's incompatible with certain older models of cameras. I think the most you can put in your camera is 2GB. I've done some research and it doesn't say anything about your camera being SDHC compatible. Return the card, get a 2GB.

1) If you take out the memory card there will be a small unlock/lock switch on the side of it (that may be the problem?)

2) If step 1 does not work, than it's an internal issue w/camera and you will have to send it to Casio for repair. Here is the link www.ecasiorepair.com. They will charge $39-115 if the camera is not under warranty.

Guys - I know this sounds absolutely bizarre but I recently had this problem with my casio exilim ex p600 (with the lens sticking when powering down and not powering back up again) and it worked for me. Pulling my hair out trying anything and everything, I decided to take the SD card out, turn the camera on (at which point hopefully your lens will go back in) then turn the camera off again, Put the SD card back in and hey presto everything ok! Doesn't make any techincal sense (and I'm semi into these things) but the lens sticking\not powering up and happened to me twice now in last few months and that sequence of events is the only thing I could do to solve it! If that doesn't crack it try taking both the SD card and the battery out and doing the same. Good luck...apologies if it doesn't work for any of you guys but it did work for me :o) Let me know how you get on when\if you try it.

Hi, I sent my camera to the dealer...thanks anyway, Sevendata

I'm having exactly the same problem,

aaa

had the same problem!
they changed the camera in the servicecentre, saing that it was manufacturer problem