Hi, when I use my monitor through the HDMI connection I see red dots (sometimes some, some times a lot, some times in almost straight lines) in dark/gray areas.

This is more noticeable if I search gray scale images for example. And if I move the image with the mouse, the dots move along, they are not fixed.

The thing is.. if I connect my PC to my TV with the same cable the red dots don't appear. Only with the monitor. That's why I ruled out my PC.

But If I use the VGA connection with the monitor, again everything's normal. So it only happens with the HDMI port.

I'm afraid I don't have a DVI cable to test the other digital connection.

My monitor is a Dell ST2320L. Thanks.