When i turn the camera on it says memory ard error

There are several possible causes for "memory card locked", "memory card error", or "no memory card". The most common cause is having the tiny slide switch on the side of the card in the wrong position. The second most common is trying to use a 4GB or higher SDHC card with an older camera made before SDHC format came out. There are also other common causes if the above didn't help, with troubleshooting steps for this problem listed here.

I've checked out your Canon Powershot SD550, and this previously written answer definitely applies to you, Wendy:

The problem is that your camera is only compatible with SD cards, not SDHC cards. You bought a larger card for your older camera, not noticing that it was SDHC (or not knowing that it mattered). The new card doesn't work, not because it or the camera is broken, but because it's not compatible.

Cards up to 2Gb are generally SD.
Cards of 4Gb are generally SDHC.
Cards over 8Gb have to be SDHC.

(There are exceptions. Sometimes, manufacturers make 4Gb SDHC cards but some have errors; they disable half of the chip and sell it as 2Gb, but it's still SDHC. 4Gb cards are almost always SDHC because they're cheaper, but 4Gb SD cards do exist. They are so rare that I've even seen a guru on this site claim they don't. I did own one once, but it was very expensive and turned out to be so unreliable that I had to return it. I don't recommend looking for one, because of the problems.)

Your solution is to go find a 2Gb card, and be extra sure that it doesn't say "SDHC" on it.

First, make sure your camera is designed to use the kind of card you are using. Some of the older Canon digicams will not accept the higher capacity mem cards. For instance, they may accept the 2GB cards but will not accept high capacity 4, 8 or 16GB cards.
You may want to try to format the card in your camera, if you can get it to that point on the menu.

Having gone over a month with no response, I assume it was just a matter of SD versus SDHC cards.

I assume that you know that there is a tiny tiny on-off switch on the edge of each SD card. If they are locked in the off position....

Remove the card and look for a tiny slide switch on the side of the card. Slide this switch to the other "unlocked" position. Reinsert the card and try it out.

Hello

If the card works in another camera or another card doesn't work in your camera , the problem is with your card reader in your camera.

If you open you sd slot and look inside with a sharp light , you should be able to see on the left side of the slot there is a little copper or spring steel lever switch. This switch work as follows:

1. When no card is inserted / no write protection , the switch is open and thus the protection is off.
2. When locked card is inserted , the tab is depressed and tells the camera that the card is lock.

Contrary to popular belief ,the little tab on the sd card is not an electronic switch and does not physically influence the card operation itself. If you put a locked card into a camera without a sd lock switch , you would still be able to use the card normally.

It is incredible difficult to fix this switch because of space limitations in the sd card. Look into the sd slot and if you can see the switch , use a needle to pull the little tab down toward the base of the camera by about 2mm or until it works being careful not to bend it.

If this does not resolve your problem , there might be a short in the switch circuit and the camera will need to be disassembled to resolve this error. This should cost no more than $50.

Please feel free to contact me if you need further information

Kind regards
Andrea

E18 is a lens error. My guess would be sand got into your lens (into the gears, etc.). These guys should be able to take care of you. http://www.darntoothysam.com/servlet/the-1730/Canon-Powershot-SD550-Camera/Detail

Check in the Manual that the camera can accept 2Gb.
If it say it can then return the card for replacement.

hi
I was happily using Cannon IXUS 750on one of my long vacations when the memory card almost got full. perhaps I clicked once or twice to take a picture when the card was full. ever since the camera displays Memory Card Error.

These are almost all the photos I took on my camera since a long time now. Could anybody pleeeese help me in retrieving my photos and recordings?

thanks v much

Nahar