Question about Canon PowerShot A540 Digital Camera

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Canon A540 or SD card problem

MY Canon A540 has always worked fine. I was on vacation in London, using a 1GB card and many of my photos vanished from the camera while some single shots were duplicated four times. Other photos showed up cut off on the lower half with a solid gray color. Was it the card or the camera ??? I keep testing & it work fine, however I do not know what to trust! Help please, Rich

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Re: Canon A540 or SD card problem

Hi Rich, This sounds like a problem with filing system of the memory card and is indicative of forthcoming bigger problems. Try remove from the camera and slip into a memory card reader attached to a PC. You have to try and recover as much photos as you can. Thereafter, it may be required to format the memory card either via PC or the format command in the set-up/menu of the camera. Further you can use diagnostic utilities (PC side) to determine if the memory has developed any bad areas. Hope this be of help/idea. Post back how things turns up or should you need additional information. Good luck and kind regards.

Posted on Oct 04, 2007

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Hi, My canon PowerShot A540 camera gives an error " Card locked" Memory card error. I tried switching off the lock, but it didn't help. The card does not get recognized while inserting it in...

There are several possible causes for "memory card locked", "memory card error", or "no memory card". The most common is trying to use a 4GB or higher SDHC card with an older camera made before SDHC format came out. Other causes include problems with the tiny slide switch on the side of the card, or the electrical contact switch internal to the camera. The problem may also arise from simple formatting problems if the card has never been formatted in the camera (note that this will also erase the card). Troubleshooting tips for this problem may be found at this link.
You also mention recovering photos saved on the card. If you actually did take pictures with this card (assuming it's a 2GB or less standard SD card, as 4GB SDHC was not designed for your camera), you may be able to recover the photos using recovery software. See this other link.

Jun 10, 2011 | Canon PowerShot A540 Digital Camera

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When I now try to use a 4gig memory card it always says the card error or card locked. I have tried card in both positions but it still says it is locked. I have tried with 3 different 4gig cards. What...

You may be restricted to using only SD cards, and many 4gb cards are actually SBHD. My sister had this problem with her camera and by putting in a new 2 gb SD card, her camera worked fine. You may need to shop online in order to find an SD card, but they're widely available online. It costs about the same for 2 2gb cards as one 4gb even though they aren't as convenient.

Nov 11, 2010 | Canon PowerShot A540 Digital Camera

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Does not work with 8mb memory card. Why not please? Canon A540. Problem occurs when change a 2mb card for a 8mb card. Have not tried anything to fix problem

The A540 is designed to work with SD cards. Your 8GB card (I assume you really mean gig, not meg) is actually an SDHC card (SDHC stands for Secure Digital High Capacity). While SDHC cards will fit into SD slots, they will not work in SD devices. You need to keep using SD cards, 2GB and smaller.

Aug 23, 2010 | Canon PowerShot A540 Digital Camera

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A540 says "memory card error" " card locked" but 4gb card is not locked - can access card on card reader - copy on and off. a540 works with 2gb sd card no problem. please help?

The A540 works with SD cards. Your 4GB card is actually an SDHC card. While it fits into the slot, it is electronically incompatible and will not work in this camera. You need to use SD cards, 2GB and smaller.

Jan 13, 2010 | Canon PowerShot A540 Digital Camera

1 Answer

Memory card error - can't format card

If it is an SDHC card your camera is too old to support it.  You need to get an older-style SD card.

Apr 26, 2009 | Canon PowerShot A420 Digital Camera

6 Answers

Can't access photos on 2 GB SD camera card.

You may try some photo recovery software to rescue the files on your digital camera sd card, here are some for your options.

Photo Recovery (for Windows)
Photo Recovery for Mac

Be careful: Before your pictures are recovered, do not attempt to save more files to the card in case the original files(your pictures) are overwritten.

Mar 22, 2009 | Canon PowerShot A540 Digital Camera

1 Answer

Do not know why my camera is saying that my card needs to be formated' I brought it into London Drugs camera department and they could not help me they say that I need to find the manual; a manual that I...

This camera only supports an SD card of 1GB maximum. I tried a 2GB SD card and the camera reported the error you describe, that the card needs to be formatted (and it wouldn't format in the camera, either). I purchased a 1GB Duracell SD card P/N DU-SD-1024-C at Wal-Mart, and it was actually a 2GB card (tested in my desktop PC's SD slot and it was fine). Nice deal, but this camera can't use it. I bought a 3-pack of Kodak 1GB SD cards at Wal-Mart and they worked great in this camera.

Dec 23, 2008 | VuPoint DC-M306AT-VP Digital Camera

2 Answers

Canon powershot A540 digital ...problem it shown card locked

Remove the SD card from the camera. Look for the tiny slide switch on the side of the card. Slide this switch back to the unlocked position (opposite of whatever its at now).

Aug 01, 2008 | Canon PowerShot A520 Digital Camera

2 Answers


From what I can see here, the card's size is too large that your camera couldn't support or handle. Maybe your camera is just limited to 1GB or 2GB. Try plugging 2GB card and see if it detects it. I had similar prob where I bought a 4GB card and it does exactly the same thing. I consulted the vendor, he said it only supports up to 2GB thus, it's a product limitation...well I'm stuck there hehe, can't be helped at all..

If you are certain that your camera can handle 4GB card or higher, try to plug the 4GB card into a card reader and see if it detets it. If it does, try to reformat the card and try it again to your camera.

Also, 1 possible thing is that your 4GB card is password protected. Was it plugged in to any other device? If it was, try to plug it back to the same device where it was connected and disable the password.

Onother thing is the brand. Some camera is brand sensitive when it comes to cards. You may need to try different brand as well.

Hope this helps. :-)

Jan 06, 2008 | Canon PowerShot A540 Digital Camera

1 Answer

Canon A540 flash charge not holding

Some of The Canon Powershot A530 and A540 cameras are subject to a advisory recall. Seems that a small spring on the battery compartment door can short out the batteries. Suspect this of yours, in that you mention that your batteries aren't lasting long. If your camera is on the list, Canon should fix this for you for free, including free shipping both ways. This is regardless of your camera's warranty status. Please check the following two links for more info:

Oct 25, 2007 | Canon PowerShot A540 Digital Camera

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