Easy Tips to Connect a PC to an HDMI TV
If you have a desktop computer that does not have an HDMI output, you can install a new graphics card that has an HDMI output. But things will get complicated if the new graphics card doesn’t have an output that matches your monitor (presumably VGA), in which case you’ll simply be swapping one problem for another.
To avoid the problem, you’ll have to find a graphics card that has both HDMI and VGA outputs, and preferably an inexpensive one. Because if you set your sights on an expensive graphics card, and if you have to pay someone to install it, you might be better off just buying a new desktop system that already has an HDMI output.