I would attempt a Repair/Recovery, which will restore your device to factory settings as well as update the firmware and improve functionality of your player.
You can find a lot of valuable information on the Philips Support Site:
After performing the Repair, allow your player to charge for several hours and be sure to practice a regular charging routine. If you have any additional questions, you can chat at the above link or you can reach Consumer Care at 1-888-744-5477.
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Use a pen tip or other sharp object to insert the RESET
on the side of the player and connect it again to your PC.
If it is still not recognized, your player may be at fault. Try the Philips Device Manager software. NOTE: Contents will be removed by using the repair function.
You can find the recovery key on your player from the below table.
- Install the Philips Device Manager and run it with your player connected to your PC. You can download it under the Software & drivers section.
- Click the Repair tab in the Device Manager, press and hold the corresponding recovery key on the player when connecting it to your PC.
- Follow the PC screen to recover your player.