Why does my fujifilm finepix s5000 camera say memory card is full when it is empty ?

The CCD is bad, or the connector.

Format the memory card and select "RENEW" for the FRAME NO. option in the SET-UP menu. Take a picture to reset frame numbering to 100-0001, then return to the "Frame No." menu and select "Continuous".

First of all, do not save any new file to camera's memory card.

Take out memory card, and connect it to computer using a card reader. You should see memory card shown as a drive letter (like H:) in Windows Explorer.
Download this photo recovery software
http://www.asoftech.com/apr/
Install and open asoftech photo recovery software, select the memory card, and click 'Start' button.

Hello - this could be 1 or 2 reasons / solutions to try
1 Make sure the Camera Internal Memory is empty before inserting the SIMM card.
2 Memory Card is not formatted - go into settings to format. (if the card has already been formatting on a PC then the Camera won't recognise it)
3 If it's SD card make sure the lock button slides into the unlock position.
OR -- if these don't work download the Manual -- http://www.fujifilm.com/support/digital_cameras/manuals/pdf/index/a/finepix_av150_manual_01.pdf
Hope this helps and you are back on track taking finepics again.
Ray

Your memory card or internal memory may be full. I've run into situations where the card full doesn't flash on the monitor or LCD screen because there is lets say 3 gigs of memory left but the picture you are taking is 3.5gig's it won't take the picture because there isn't enough memory to put the image anywhere. Download your pictures to your computer, format your memory card and all should be good again. If you are using the internal memory you will need to obtain (buy) a memory card for your camera and download from the internal memory each picture from the memory card one by one until all the internal pictures are on the removable memory card then download these to the computer. After you have them on the computer go back into the internal memory and delete each of thse pictures and you are ready to start taking pictures once again. it took me longer to type this then the process will take to do.

Try formatting the card, It probably contains files that are not deleted. You format the card in the setup menu. Make sure you have saved all images to the computer before formatting.

I think there is a small button on the back of the camera near the bottom that turns the viewfinder off and on I think. It should be in the manual.
It might have gotten bumped while in the bag.

You need to reset the file-numbering.
Turn mode-dial to Set and turn on the camera. Select Frame No. from the setup menu. Switch Frame No. to Renew. Press OK. Format the card (also from the Setup Menu) After formatting, select Frame No. againg and switch to Cont. File numbers will now start from 100.0001 again

Sometimes memory card error happens without any notice. But luckily most of the time we are able to fix the memory card error and get back files on the memory card. Take a look at this guide:
Fix memory card error and recover data
good luck!

Please be more specific; I do not understand your question at all.

If you meant that the card does not initialize itself, then you must "format" it first.