Storing or formating SD card

Try using a different SD memory card. You can also try formatting your memory card, BUT that will delete everything stored on your memory card.

If your videos are stored on a SD memory card then the SD card maybe to slow. Try using a faster SD card say class 8 or class 10.

Your card may not be formatted -or- it is and it;s a proprietary format. If you want to format it, here is the instructions (for Windows):
Put your card into your computer (some have a slot or else use a card reader). Right click on that drive after it appears in My Computer and select Format; set the File System drop-down to NTFS (better file storage space) or FAT32 (more compatibility in older operating systems) and click Start.

It didn't come with a memory card because Vivitar can't know what type/size/speed card you want. You should be able to buy SD and SDHC cards at just about any department, electronics, or office-supply store.

Loosely speaking, a memory card is the equivalent of film, with the main difference that you can reuse a memory card. You take your pictures, they get stored on the card, then you can transfer the pictures to your computer and reuse the card for more pictures.

1. Verify that the printer is turned off.
2. Remove the Secure Digital memory card from the printer.
3. Examine the Secure Digital memory card:
   • Is the lock switch in the unlock position?
   • Are there any visible discolorations or defects such as crack or nick in the card?
   • Are there any contacts missing from the end of the card?
   • Are there any deep scratches in the card contacts?
   • Is there any heat discoloration on the card? NOTE: If all of the above questions result in No , proceed to Step 4.
4. Check if the HP Photosmart printer supports the file format. NOTE: In order to know which file formats are supported by the different HP Photosmart printers, please refer to the manual of your printer.
5. (Saving the pictures on the PC, if possible) Insert the Secure Digital memory card in the camera (or another device) and format it following the proper instructions to perform it.
6. Capture an image.
7. Review the image. If the image is corrupted or an error such as Unsupported Image File is displayed, the Secure Digital memory card is suspected to be defective and should either be replaced or referred to the manufacturer for further troubleshooting.
8. If the images are read properly, turn on the printer. Insert the Secure Digital memory card in the Secure Digital slot.
9. If the printer display continues to show the Card Not Recognized error, try using another Secure Digital memory card, if one is available.
10. If the printer is still unable to read a functional and compatible Secure Digital card, contact HP to obtain additional troubleshooting information.

It's suggested that you use any SD Memory Card formatting Software to format the SD memory card. You can download any such Software from the address given below:
https://eww.pavc.panasonic.co.jp/support/jp/sd/sdfv2003.exe

Download the software from the above link and install in your computer and then format the memory card using it. After formatting the memory card, insert it in your Camera and use it normally.

this will say that if win you put the files on it was on a diferant defice that stores the files in a differnt format and the only way to view thim would be on that device your best bet is to press x and go to the folder see if thar is anything in it if it isnot reading it you must reformat it to get it to read it...because it isnot in a readable formate now it may or may not read it on your device...hope ths helps,

Try formatting the card, it should be one of your camera menu options.

If you used the SD/MMC memory card in another brand of camera or device, you may need to format the card in your new EasyShare digital camera. (You may have noticed a "Memory Card Needs Formatting" message when you inserted the card.) CAUTION: Formatting deletes all pictures and videos, including those that are protected. Removing a card during formatting may damage the card. To format the SD/MMC memory card or the internal memory of the camera: Transfer images to the computer before formatting the memory card. Press the camera Menu button. Highlight SETUP MENU, and then press the OK button. Highlight FORMAT, and then press the OK button. Highlight an option - MEMORY CARD (deletes everything on the card), CANCEL (exits without formatting), or INTERNAL MEMORY (deletes everything in internal memory). Press the OK button. Highlight Continue, and then press the OK button. Wait until formatting is finished before removing the card. When formatting is complete, the SETUP MENU is displayed. Press the Menu button to exit the menu.