My Sandisk Sansa C140 only display sandisk logo
You can update the firmware. This will return your device to factory settings and fix any internal errors. All your current content will be deleted.
Download this file:
This is the firmware update utility for Sanca c140 (c100 series) devices.
There is a howto.txt file included, follow the instructions.I am posting the instructions here for convenience.
1. Download the attached file and save it on the desktop.
(the player should not be attached to the computer at this point)
2. Double click the file to run it.
3. Accept the license agreement.
4. Remove the battery from the mp3 player.
5. Press and hold the center (select) button and connect it to the computer (keep holding the button, this is the firmware update mode).
6. If the New Hardware Wizard appears (now you can let go of the select button), do the following: (if asked, choose not to connect to the internet for updates), then choose to install the device automatically, then follow the prompts to finish the installation.
7. When the wizard comes up, or when the Update button becomes active (whichever happens first), you may release the select button.
8. Click the Update button, and then click OK to the message that comes up.
9. Wait until the upgrade finishes, then unplug the device.
10. Put the battery back in, and turn on the player.
11. Hopefully the update will be performed, then choose English for the language when prompted.
12. Check if the issue is resolved.