My graphics card in my HTPC was connected to my TV using a DVI to HDMI cable and has worked well for a year or more. The other day I noticed there were some pixels flashing on the screen and then after a reboot no signal was getting to the TV. I swapped the DVI cable to my laptop which worked fine eliminating the TV as a variable. So I tried the VGA port on the graphics card which does still work.
My question is, has the DVI port (or some part of the processing associated with this port) broken and could it be fixed supposing something simple has gone wrong or is there something deeper gone wrong with the card? The reason I ask is that I know that graphics cards card provide a basic low level graphics output at boot which is superceded by the more full featured graphics output later on.
Your thoughts are appreciated, I don't want to throw it away if there is something simple wrong with it and I don't want to spend a lot of money on it diagnosing what is wrong with it.