Problems with boot and internal disk

Hello!

When I try to boot my Sansa Clip+, it says “Not enough space for music DB. Please free 90MB”. It is not recognized by the computer, but occasionally appears as an unnamed USB storage device with 30 MB (?) capacity. Chkdsk does not work, because the disk is reported as having “RAW” format. The format command does not work either, telling me something about “track 0” being corrupt. Please tell me what can I do to make it work again. The player was bought on ebay some 14 months ago, so I believe the warranty has already expired.

Thanks in advance,

Alex.