Hi! I wrote to the support center for a similar problem. They sent me the solution which has worked successfully! Hope it helps you out too. Their solution -->
"Thank you for requesting
information from your TrekStor Service Team.
The reason for the described
malfunction may be a damaged firmware. We recommend to reinstall the
current firmware on your i.Beat mood. You can download the firmware for
the i.Beat mood from our web sites at http://www.TrekStor.de/en/index.php
Choose "Service" and then your MP3 player.
Please note that the
firmware can only be reinstalled using a Windows operating system. The
files which are downloadable on our web sites are packed and in ZIP
format. You will need archive software as e.g WinZIP to open and extract
this file. If you do not have a suitable programme installed on your
computer you can download it as shareware from the internet.
the downloaded firmware on your PC by double-clicking the file
"Setup.exe". Start the firmware update tool afterwards. Remove the
battery of the i.Beat mood. Press the MP3 player's Play button for
approximately five seconds. Now connect your i.Beat mood with still
pressed Play button to your computer. Keep this button pressed until
Windows detects a new device in recovery mode.
computer has installed the i.Beat mood the firmware update tool will
detect your MP3 player. Now you will see the recent (current) and the
new (update) firmware version. If "Format Data Area" contains a
checkmark the i.Beat mood will be formatted before the update and all
data stored on it will be deleted. TrekStor advises to format the i.Beat
mood along with every firmware update.
Afterwards, your i.Beat
mood can be handled as usual. Moreover the MP3 player should be
accessible again under My Computer.
We know that you as a customer have the choice and
we thank you for having decided for TrekStor."