However, if the PC is the issue, then there might be different reasons for the problem. You can also use try using another TV/Monitor to narrow down the problem further. If the problem remains, then your PC or your monitor/TV might be the issue. Also, try using another HDMI cable that is known to be functioning. If the issue persists, then the cable or your monitor/TV is likely to be the issue if not, then the PC might be the issue. Start by plugging your HDMI to another PC. The problem could be anywhere from your PC, the HDMI cable, to your monitor or TV. There are several reasons why your HDMI sound might not be working. This article will explore this issue and give working solutions to the problem. While the technology has been seamless, several users have always complained that their HDMI connection can show the video but there is no sound accompanying it. Using only one cable/port, users could now stream audio and video to their monitors and TVs including 4K content. The HDMI (high definition multimedia interface) made a tremendous stride in video and audio streaming when it finally allowed uncompressed media streaming hence clearer and sharper images and sound.