What analog outputs are available from your PC? Most PC have mini phone plug outputs and you can use a cable like this.
I have an HP laptop with these ports: 1 HDMI, 3 USB, 1 headphone. When I hook it up to my small computer speakers, it's a cable similar to this that goes from the subwoofer to my phone port. So, maybe something like you're showing from my phone port to the matching input on my receiver?
It is hard to know what you need, as we can't see your PC and interconnect facilities are very variable. You will have to look at your PC and see what outputs are available, that your receiver can accept. If you can post a link to what PC you have, that would be very helpful. At the moment we are running blind.