ASUS LCD monitor won't display in VGA or HDMI

[rperez13]

Hello,

I have a ASUS monitor that will display VGA on a laptop, but HDMI will not display. When I plug it into my PC tower, it will not display in either VGA or HDMI. I have tried plugging in, then powering on, and powering on, then plugging in. Anyone have any thoughts? The Laptop is a Gateway, the tower is homemade, but I do know that an older monitor has displayed on it.

 

[PhilFrisbie]

On the tower, does it have a video card, or motherboard video, or both?

If both, have you tried both to insure the card is enabled?

Does the older monitor work now?