Thanx gaboon for reply
well .. there was no problem with playing .. and its never do restart .. but there was a problem with files .. when i connect the player to computer and try to change file or floder name .. or ( copy .. paste somthin) its some times the files names its came like ($$hwber32#@@#@# ) u know somthing like that and cant be deleted so i have to format it but it was still 1 G after format .... well if it was hacked like u say .. i know its wrong but there is no way to get it back to 1 G ??