You can hook up a PC to an audio-video receiver to convert the computer's video signal into HDMI (high definition media interface) viewable on an HDTV. Some computers have an HDMI socket to transmit audio and video through one cable, so the receiver sends the sound out to the speakers and the video output to the HDTV through an HDMI cable. If your PC doesn't have HDMI, use the available video port and connect the audio output separately with a stereo cable to the receiver.
Plug in an HDMI cable from an HDMI output jack on the back of your receiver to a video input on the TV.
Connect a second HDMI cable from the PC to an input jack on your receiver. if you don't have an HDMI jack on your computer, plug in a four-pin S-video cable to the socket on the back of the PC tower and connect the other end to an S-video input on the receiver.
Plug in the stereo cable to the audio inputs on your receiver that are paired with the S-video connection.
Connect the two plugs on the other end of the cable to the jacks on the Y-adaptor.
Push the small plug on the Y-adaptor into the mini-jack labelled "Line Out" or "Headphones" on the PC.
Turn on your PC, receiver and TV.
Set the source selector control on the front of the receiver to the label for the inputs used to connect your computer.