As a computer tech, I've had my run ins with ransomware over the years. Most were removable without harming any important files. But, cryptolocker and cryptowall were nightmares. Yea, the virus can be removed. However, any files encrypted were lost forever.
Prevention is the best cure. So, Bitdefender developed a ransomware vaccine. Very easy to install and use. And, this will not conflict with your current Virus Protection software.
"Following the footsteps of its predecessors, CryptoWall has become a financial success for its creators. Recent numbers show that inflicted an estimated $325 million in damages in the US alone. Its high turnaround prompted other cybercriminal groups to write new code that uses more sophisticated encryption algorithms. Therefore, it’s becoming harder for AV vendors to crack the code and come up with a solution."
As always, keep Windows and your Antivirus software up to date. And, constantly back up your personal files. And, of course, never click or open any suspicious links or emails.