MP4 memory urgent problem!

There was no question of the use of the boot, and music to the movies was normal.But connected computer, open the disc space to show that nothing, right-click Properties, showed 0 bytes of memory, do not understand what the problem can not download things.

were cheated, after the computer in the format easy to see that the storage systems often have the problem under the format you want, when You can not go under repair 3 of the MP4 format you will be able to solve, I have encountered such a problem