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Hello I have a Canon Powershot A540 camera. It is about 6 years old. I have used memory cards previously without a problem. I recently puchased two new memory cards and cannot use them. When I put them in the camera, it says "Memory card error" and "card locked". I have tried unlocking the cards, but when I put them back in the camera, it still shows as an error. I consulted the manual (p30) and tried to follow the steps, including to select the "format" option. However, on my camera, I cannot select the "format option" - I can see it, but it can't be selected. Grateful any assistance you can provide to make the memory cards work. As I am travelling, I do not have regular access to the internet. If you cannot respond in the next 10 mins, please email your instructions/advice to caroline.mulas@gmail.com. Thanks. Caroline

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Hello and welcome to fixya

Since your camera is more than 6 years old the problem is probably related to SD/SDHC compatibility. You cannot use a card larger than 2GB in your camera.

In 2008 the SDHC format was introduced but even though it fits the SD slot perfectly , the camera's manufactured before 2008 does not have the capability to use the card and reads card error or other messages.

This is 9/10 times the problem you will have. If you have a card smaller than 2Gb with witch you are having the problem , please read the following tip a friend of mine wrote on the subject as it covers all the possible alternative problems you can encounter.

http://www.fixya.com/support/r4117096-card_locked_error_fix

Kind Regards
Andrea

Posted on Sep 27, 2010

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1 Answer

When putting a Lexar Multi-Use 16 GB SDHC memory card in my Canon Powershot A540 I get Memory Card Error message as well Card Locked message. Have tried unlocking it by the slide on side of card, is t


It's a lost cause. The A540 works with SD cards. While SDHC cards will fit into the slot, they are electronically incompatible and will not work in devices not designed for them. You need to stay with SD cards, 2GB and smaller.

Jan 03, 2013 | Canon PowerShot A540 Digital Camera

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I have a canon powershot a540 bought used and i cant not format the memory card


Hi Hello,if your Digital camera and memory card can't format,try to my advice, you get out your memory card to your digital camera,and you can try to reformat your memory using your computer,if the memory card can't format throught using your computer,its mean your memory is need to replace new memory card. hope its work it,thanks

Jul 28, 2011 | Canon PowerShot A540 Digital Camera

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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

1 Answer

Canon powershot A540 I have tried to erase memory card but it says card locked. How do I unlock.


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.

Dec 17, 2010 | Canon PowerShot A540 Digital Camera

1 Answer

Cannon Powershot A540 SanDisk SDHC 4 gb I insert the card and receive a memory card error. Can't format


Hi,

A 4 gb memory card is beyond the capacity of your Cannon A540. It is too large. I would stick with a 1 gb card in that camera.

May 28, 2010 | Canon PowerShot A540 Digital Camera

1 Answer

Memory card locked


When this problem occur you need to set the memory card unlock or not protected. Remove the memory card from camera and you can see a small button in the memory card, so you need to slide that to set the memory card unlock or not protected.

Feb 07, 2010 | Canon PowerShot A540 Digital Camera

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Copying Video ---- TO ---- my Canon A540


Yes, if you use a card reader, and do not change the file name, AND place the videos back in the same folder it should work.

Jun 30, 2009 | 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

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Asking what to do?


8 GB is more than your A540 can handle. You can check with Canon, but I'm pretty sure that the max that your camera will understand is 2GB. Additionally, your 8GB card is most assuredly an SDHC card and not a standard SD card. Your A540 also does not understand SDHC format. The max card that you should buy for that model camera would be a 2GB standard SD card. These are very inexpensive these days and run about $6, shipping included:

http://www.amazon.com/s/ref=nb_ss_gw?url=search-alias%3Delectronics&field-keywords=2gb+sd+card

Jan 20, 2009 | Canon PowerShot A540 Digital Camera

1 Answer

Memory card error


On the old Powershot S400, this error was caused by a dead internal "clock" button battery. Fixing it required simply replacing the battery. But before you attempt to do that, would first suggest trying a different memory card.

Jan 20, 2008 | Canon PowerShot A540 Digital Camera

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