All my personal data(photos, videos, documents) on my laptop have been encrypted. Encryption was produced using a unique public key RSA-2048 generated for my computer.
For the Decrypton I require a private key. To obtain the private key for my computer, which will automatically decrypt files, They asking for extortion of 0.55 Bitcoin (~350 USD).
A window pops up in my laptop which i can't close, It having a clock of 120 hours showing "Your private key will be destroyed within this time frame".