So you want to share photos, watch videos, or play computer games on the expansive screen of your HDTV? On one hand, this is a really simple how-to: use HDMI! That, of course, isn't the whole story.

Just about every TV accessory needs an HDMI cable, but not all of them can output 4K. Here's how to tell if yours is capable.

Most HDMI issues are caused by cables, wrong input selection, or driver errorsTesting with another device helps identify ...

HDMI ports do more than connect cables. From audio routing to wireless displays, lesser-known HDMI gadgets can quietly expand ...

HDMI technology incorporates both video and audio through the same cable without the need for an additional audio connection. This differs from the VGA and DVI formats, which only allow video and ...

A reader asks Dr. A why he can't view some of his material on the TV he bought. Lots of people run into this problem, so we figured we'd take it to Dr. A for a solution. Q: I have an HDTV that only ...