1. Fix the hhctrl.ocx file using the program FileRestore Professional (see 'Resources' below). Download and install the program on your computer and then open the program. Choose the 'C:/' drive as the target location; FileRestore Professional will locate and repair corrupted files.
2. Download the program Unstoppable Copier for free (see 'Resources' below). Install and run the program. Select the hard drive from which you are running your operating system as the location to be scanned. The program will find and fix damaged files, including the hhctrl.ocx file.
3. Fix the hhctrl.ocx file using the program ICE ECC, which you can download online for no cost (see 'Resources' below). Install and run the program. Choose the type of file you wish to repair -- in this case, specify the hhctrl.ocx file. ICE ECC will find and fix the file.