technologue , your player might have it's firmware corrupted, so what i can suggest is to extract the firmware, then re-flash it again.
Try this Sigmatel extractor here
http://www.mympxplayer.org/sigmatel-...tor-df195.html
After you create a firmware dump of your player, re-flash it back with the Uploader here
http://www.mympxplayer.org/sigmatel-...der-df230.html
Hopefully it works for your player.