Windows XP communicates with the hardware in your computer through device drivers, computer programs that act as middle-men between the operating system and the motherboard and its connected ...

Before we talk about the advanced level of troubleshooting, let’s get a few things straight. First, Make sure your HDMI cable is not at fault. You can try it with another computer or another TV.

I actually experienced the exact same issue with my Windows 8 install on an ASRock CoreHT 252B Mini PC, which acts as my HTPC. Probably the same or similar as you, I'm outputting both video and audio ...