The bluescreen is indeed caused by the HDCS.SYS file which belongs to this product: Hidden Data Cryption System and CopyStop Protection Tools. Most likely this is a sentinel driver that's not working correctly. I recommend its immediate removal from your computer to stop bluescreens from happening.
Another problem is related to the available or troubleshooting of the application. I have searched, but couldn't find anything related to the software.
Use Revo Uninstaller to get rid of the application.