New 4GB Skandisk card, no memory and no images message

Look at your memory card. SD cards have a slide switch along one edge. The position farthest from the contacts locks the card, protecting it from writes. The position nearest the contacts unlocks the card.

Run some anti-virus software on it.
My advice to try quick heal anti virus.

Your camera uses a different filing system than the other camera...they are not interchangeable.

I have nikon coolpix L5, i just brought a 4gb memory card that's supposed to be compatible, but when i go to take a picture it say You cannot use this card?

Solution 1 Card has a protection tab, it could be in the locked position, try moving it. then try in camera.
Solution 2 use a progran like Image Rescue, downloadable from www.lexamedia.com to save images & then re format card

You can put max 1GB cf card.

Sounds like a card problem. Did you format the card in the camera when you first got it? If not, recommend formatting it using the camera. Look for the format option in the camera's menus. Note that this will also erase all images from the card, so make sure all pictures have been first downloaded to your computer.

I'm going to go out on a limb and predict that you have never tried a 4GB card in this camera before.

After looking at the manual, this camera, a 2001 product, would seem to be from a time when 1GB cards were still off in the future, and 4GB cards were not even conceivable.

So that you know, the manual refers to a 160MB card as the highest option available at the time, but I have to think that 64MB was considered a large card back then.

The link for the manual is: http://www.nikonusa.com/pdf/manuals/coolpix/CP775man.pdf

The page I'm referring to is page 154 (which is actually page 168 of the pdf document).

I suggest you contact Nikon and ask for an update to the compatible flash cards for this camera and find a 256MB or 512MB that someone has lying around.

Dynamite,
have you tried to reformat the CF card?  If you deleted the image through your computer and not with the camera, the computer may have removed more than what was needed...

SteveK

Did the 1st card ever work? (i.e. is the camera new to you). After many uses, the memory cards need to be reformatted (thru your Setup menu). Post the make and model of the cards and we can check to see if they're compatible w/ your camera.