what is wrong with my intel mac mini

Have you though of the possibility of;

• A bad connection, i.e. HDMI, cable?
• A bad display?

If not the above, it defiantly sounds hardware related. Here is what I would do;

• Call AppleCare (not chat), ask for a Senior Advisor, and have the advisor make an appointment and give proper notes about the case to the Apple Store.
• Go to the Apple Store appointment, and re-explain the issue. Make sure to explain you called AppleCare and talked to a Senior Advisor. Also note you already brought the Mac in, and you are still having issues. Be very clear and polite.

In the end, issues happen. It can sometimes take multiple calls or appointments. Especially with Macs, and even more especially with the Mac mini and Mac Pro line, since more third party hardware is being used, i.e. the display.

Cheers,

Jack

Hi there,

We cannot see the image you posted. You need to upload the image using the "image insertion" tool here.

So, what is going on? We need more details than what you've provided. Please explain fully.

Cheers,

Jack

Try a different HDMI to DVI adapter...

or a USB-C to HDMI adapter and a HDMI to DVI adapter.

Personally I just picked up the same Intel Mac Mini and run dual Samsung DVI monitors using the above adapter set up.

This is a new Intel or Silicone Mac Mini model?

https://support.apple.com/en-us/HT201894

What monitor(s) have you tried?

(brands, model #s, size)

What cable and adapters?

(HDMI, DVI, VGA)

In order to get a solution, you'll need to go through it again. Call AppleCare and get a Senior (Tier 2) Advisor.

Cheers,

Jack