[ron3003]

zrock already posted a link to the probable firmware to fix your player. You wont fix the old firmware thats already on it and has malfunctioned, it's beyond repair. You must flash a new firmware to the device.
If your computer recognizes your player ie; a usb icon appears in the taskbar near the clock when you connect it then it's either an Adfu device only visible in device manager/usb controllers or is seen as a Hs Usb Disk with a drive letter assigned then you should use Mp3 Player Upgrade Tool, which is part of Mp3 Player Utilities 4.15 available free in the download section, to flash the firmware that zrock linked to earlier onto your player.
Make sure there aren't any chinese characters in the filename of the downloaded firmware before you attempt to flash the device or you'll get an error about wrong protocol. Chinese characters appear as squares or other strange shapes on an English pc, just re-name the firmware file leaving only normal alphabet letters.
If your player flashes successfully but after restarting it is still not functional after performing the above steps then post again as you'll need to keep looking for the correct firmware...good luck.