The .Boop ransomware virus is new. I cannot find a decrypt solution anywhere. Hopefully there will be one in the near future. Keep searching for one. In the meantime you can either not use yourputer until a solution is found or you can pull out the drive and install a new one. You should have a backup of both your system and your data but if your writing about what to do when your drive bes unusable Ill assume you do not. Now your only course is to re-install Windows and all your software on the new drive and start from scratch. If a solution to the .Boop virus bes available you should be able to recover your files and maybe even your system. Only time will tell. P.S. Start a backup system.