Suddenly your CD has become unreadable. You should blame at yourself (no cd care, dust, scratches on cd surface, but generally this happen because you have bought a low quality cd support or a cheap cd burner), but now you can only try to recover you lost datas.

If you need a fully automatic recovery tool that can be used to recover documents, images, applications,and data from corrupted media, such as floppy disks, CD-ROM's, CD-R's, CD-RW's, and DVD's, you should try a CD recover software, like CD/DVD Diagnostic and BadCopyPro.

The duration of the recovery process and the quality of the recovered files is related with the condition of damaged media. Be careful with your CDRW, since there is no way to get your deleted data back.

Unfortunately the odds to have 100% data back as was before are small. These apps can recover most of data, but rarely 100% without loss or some corruption. Anyway, they do an excellent work and in most cases are able to successfully restore everything possibile.