Best answer by Caos
For access to your computer try with Kaspersky Rescue Disk: https://support.kaspersky.com/viruses/krd18
In terms of recovering/decrypting the files, this type of virus usually encrypts the files with very high bit keys, and in very rare cases a decryptor can be created, usually due to failure or careless programming of the malware.
But in the vast majority it is not possible, at least at the moment.
You can check if the ransomware that attacked you currently has the possibility to be decrypted here: https://id-ransomware.malwarehunterteam.com/index.php?lang=en
You can find information that can help you here: https://www.nomoreransom.org/en/index.html
Also try the utilities offered by Kaspersky: http://support.kaspersky.com/viruses/utility
If you are a Kaspersky user with a valid license, open a support ticket in my Kaspersky account.
And review: https://support.kaspersky.com/14844