CSO Article wrote: Computer experts from the popular tech support forum BleepingComputer.com confirmed that the technique works, but it requires extracting some data from an affected hard drive: 512 bytes starting at sector 55 (0x37h) with an offset of 0 and an 8-byte nonce from sector 54 (0x36) offset 33 (0x21).

If that sounds complicated, no worries: Fabian Wosar from security firm Emsisoft created a simple and free tool that can do it for you. However, because the infected computer can no longer boot into Windows, using the tool requires taking out the affected hard drive and connecting it to a different computer where the tool can run. An external, USB-based hard drive docking station can be used.