when i open my camera "memory card error appears, ive already tried different memory cards.

[jfo]

Welcome ricarose!

What camera model do you have?  

[qwe1123qwe]

I had the issue before. I searched online and found some data recovery tool. it solved my problem. i used EaseUS. You can take a try.

http://www.easeus.com/data-recovery/card-recovery-software/digital-camera-memory-card-recovery.htm