angelxena, The K9WAG08U1M is a 2GB chip not 4GB
http://www.samsung.com/Products/Semi...K9WAG08U1M.htm
so your player may be hacked to show 4GB and this could be why you are having trouble formatting it. YYou can try the HP format tool here
http://www.mympxplayer.com/dload.php...le&file_id=127
Others have found it works when having problems.
Try also right clicking on the player in Explorer and in the tools tab do an error check with all options selected then try to reformat.
Let us know how you go.