I found solutions!
Open My picture.
And click order or arrangement on upper left corner of your picture window.
There are 5 letters on upper window of `my picture`.
order,share,slide show,insert,new folder
My windows 7 is Japanese.So I can`t find English there.
So let me say like that.
Click `order` in `my picture`.
Then click `folder and option of search`
Then click expression or indication tab.
You can find detail setting.
You can find indication of files and folders.
Put don`t indication hidden files and hidden folders.
Then click OK.
The problem is clear then!
My PC support solved this problem.
Those same folders and files are information of our pictures,
My PC support said that!