A corrupt picture file on the CompactFlash card can affect camera operation. To determine if the CF card is causing the problem, remove the card and try to turn on the camera. If the camera powers on properly without the card then reformat the CF card, reinstall it, and turn the camera on. If the CF Card still causes problems it may be defective.
When you use the same CF card in different cameras, undeleted image files and templates on the card take up space. To regain the image capacity, copy all pictures and files onto a computer and then reformat the card. When you reinsert the card into the camera it should have the full capacity available.
Step 1. Launch EaseUS free data recovery software and select the file types you want to recover on the CF card. Then click "Next" button to move to the next step.