I am afraid currently there is no way to restore your files unless you have backups on a USB Thumbdrive, External Hard drive, a CD or use a cloud based backup program
When run, TeslaDecoder will search for certain Windows registry keys, the storage.bin file, or key.dat file, and if detected, will attempt to extract your decryption key. Once a decryption key is extracted it will allow you to decrypt all the files in a particular folder or all files on a computer. Unfortunately, on some victim's computers the decryption key has been stripped from the data files. In this situation, TeslaDecoder will be unable to help you recover your file