Lost data

solution
step 1
connect the device to your computer and check whether the computer shows any data if it shows one then try to access the player through the
step2
computer if you cant access the contents in the player then right click on the dirve icon and select tools and make a backup of the disk and
save it to your system
step 3
now use the bundled software with you too accsees the player if you can do it now then you can copy the contents to the hard disk

if step 1 is negative then all of your data have been permanatly erased and so then nothing can be done