Olympus 790 SW Locked photos

I am sorry here that. And generally, voice reorder save files in the internal hard drive or the external memory card, so you can try to recover the voice files as a hard drive files, know more here Audio Recovery

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.
You can then recover photos from camera by downloading this photo recovery software
http://www.softpedia.com/get/System/Back-Up-and-Recovery/Asoftech-Photo-Recovery.shtml
Install and open the photo recovery software, select the memory card, and click 'Start' button.

The best way to download pictures from your camera to your computer involves removing the memory card from the camera and plugging it into a card reader (either built-in to the computer or connected via USB or FireWire). This is likely to be faster than connecting the camera to the computer, and won't run down your camera's batteries.

Once the card is plugged in, it will appear to your computer as a removable drive. You can use the operating system's drag&drop facility to copy pictures from the card to the computer's hard drive, the same way you copy any other files. Or you can use any photo cataloging program, such as Picasa ( http://picasa.google.com ).

If you are using a memory card, take no more pics until you've recovered the photos, take the card out of the camera. This is to reduce the chance of you overwriting some of your "lost" photos. There are many good freeware photo recovery software options that are available to help you recover your photos. This blog article reviews and outlines several of the better ones.
All the download links listed in the article are through CNET, primarily to verify that these are malware free software, and to give you a chance to read user reviews on the software before downloading.

Sorry you can't find the deleted photos manually. Just try
RePicvid Photo Recovery for Free. It could help you recover deleted photos from camera.

Sounds like you will need to format the memory card. This will permanently erase all the data from the card and then you will be able to use it again. To format the card: Press the Menu button - right arrow to Setup - right arrow to format option. You will see format yes or no. Choose Yes and press ok. This will clear the write protect message and the card can be used again.

Sounds like you will need to format the memory card. This will permanently erase all the data from the card and then you will be able to use it again. To format the card: Press the Menu button - right arrow to Setup- Press Ok- right arrow to format option. You will see format yes or no. Choose Yes and press ok. This will clear the write protect message and the card can be used again.

reformat the camera

I have had success with this... Download Asoftech photo recovery program
http://www.asoftech.com/apr/

You have to use a card reader either on your computer or an external USB card reader. Put the card in the card reader, open the recovery program, then select the drive where files are deleted, then press "Start" and wait for it to do it's magic.

you can recover deleted photos from SD card with steps below
1. Do not save any new file to memory card.
2. Connect your card to computer. You should see memory card shown as a drive letter (like H:) in My Computer.
3. Download recovery software, recommended one is this photo recovery (simply because i was using it and it worked)
http://www.asoftech.com/apr/
4. Install and open the photo recovery program, select your memory drive, and click 'Start' button to start scanning process which will find your deleted photos.