There isn't a fixed version about this software available for downloading. The developers insist on using the HP Support page to download the necessary drivers on your computer.
There is also a troubleshooting page available for this procedure: http://support.hp.com/us-en/document/c01970581
My advice is to go to Start > Settings > Update and Recovery > Recovery > Advanced Start-up > Restart. Once the PC boots, select Troubleshoot > Startup. Press the option 7 when prompted, install the drivers and accept the warnings then reboot again and the camera should work.