Corrupt video file

[almoststew1990]

My memory card says I have used 3.7GB of 4GB, which is supposed to be one single video. On the memory card I have a 1.86GB .avi file, where my camera has snipped the video to keep the file sizes manageable, but the second video is only 0kb big, and is corrupt. And there is a temp file called index0. But the data must be on the memory card as it is shown 3.7GB used of 4GB. Any ideas how to access the second video?

 

[almoststew1990]

Thanks guys. It doesn't let me rename the file or move it, saying that "an unexpected error is keeping me from copying the file... The file or directory is corrupted and unreadable"

I just tied Media info but it said the same thing, that the file was corrupt and to use chkdsk.