Good day

I also have the issue with the Dell 3060 micro PC HDMI port. I use hdmi cable to the hdmi port on the monitor and still no display. Been through 3 motherboards, still no hdmi display, on 3 monitors plus a tv. Windows updates, driver updates nothing. Display port works perfectly, even with adaptor to hdmi or dvi or vga. I do not have a display port monitor and my only option is the hdmi port. Why have it if it does not work?

Dell is useless with the issue.

Any advice, besides do not buy dell...

I had a similar issue, though not exact. I had an Opitplex 3050, it has a dp and hdmi port. I used two vga adapters for both monitors. Only the DP would display if both were plugged in. If only the HDMI was plugged in, it would display. It had an onboard intel 530. Windows pulled the latest drivers. I had to go into the Intel graphics settings to find that one monitor was disabled. All I had to do was enable the second monitor. 

We've got exactly the same issue with some of our 3060s & 3070s using HDMI (no converters) 

Some seem to have resolved themselves after various restarts + driver updates - I honestly can't say which if the 2 definitively fixed the issue, but we still occasionally get a few that simply refuse to output via HDMI. DisplayPort works fine, but none of our monitors are DisplayPort. 

We've currently got one deice that hasn't responded to anything we've tried so far. Output via DisplayPort works fine, no output via HDMI (this is one of the 3070s all drivers fully up to date)

PCs are using Dell E2420HS 24 inch monitors.

Hi @wtbstuff,

I had a similar issue with mine.  the display port worked fine, but not the HDMI.  What worked for me was to download and install Support Assist and update the display adapter driver.  Hope that works for you too.

*********** problem solved ***************

Dell Optiplex new, Core I5 8400 integrated graphics Intel UHD 630.

The PC starts, but the screen connected via HDMI does not display anything!

With other screens, other cables, the same

Fortunately, connected in VGA, normal behavior

3 findings!

- on the WEB, many have this problem, it seems that no one has found a solution.

- there is NO VGA – HDMI setting, even in the bios. It's automatic. The conclusion is that everything happens as if the HDMI socket of the PC was defective.

- Solution: purchase of a DP-HDMI cable (Hama 28 Euros). Connection to the socket DP of the PC and to the HDMI socket of the screen, normal operation!

Merry Christmas !

Fastdiver

Another option by avoiding the adapter is to use a dock.
We're using the WD19 which gives us 2 x display ports and a hdmi port output.  It means we're not reliant on an adapter and we have some versatility around the output options (as well as extra USB ports)

Many people seem to be arguing why OP shouldn't do what he's trying to do without addressing why he cannot. Adaptors etc should make no difference, it should work, this is a driver issue, not a user error.

You'll notice that DP and HDMI both function on boot. BIOS is accessible from either output. It's only part-way through Windows boot that HDMI stops working and DP continues.

Faced the same problem and managed to partially solve it:

Downloaded and installed the latest Intel Graphics Command Center and Intel graphics driver (31.0.101.2115 in this case, but I do not believe it has to be that specific version)

This was the crucial step for me: DP into an auxilliary screen, HDMI into the screen you intend to use the machine on.

Boot into Windows, DP screen will carry on working, HDMI will not.

Go into Intel Gfx Cmd Center and select the HDMI screen and set as primary

You should now be able to reboot, disconnect the DP screen and the HDMI screen will carry on working.

Tested myself with multiple screens and multiple variations of DP and HDMI screens plugged in while booting, before power-on etc.

Note that the primary HDMI will only stick with the model of screen you set up as primary. And other HDMI screen will revert to the same behaviour as before; staying off, DP working only.

This is a driver issue and needs fixing, but this many years down the line it won't be,

@Tesla1856​

VGA :Surprise: Nobody uses VGA any more.

Also, any "converter cables" should be avoided.

Awful big presumption on your part there.  When most of the machines you work on have VGA (with or without other ports) and you need to use a KVM switch, you end up needing to use VGA as a common interface.  So VGA is still a necessity, as are converters.

Although I find the HDMI-to-VGA works fine once the OS has booted, if you're reinstalling the OS, you need the interface working at power-up.  So platitudes of how "nobody uses VGA", well *I* do.  So does that make me a nobody?

Yes it does, but your secret is safe with me.  I'm half a nobody since one of my PC's still uses VGA and my mother is also a nobody.  😜😎😀😅

I've had this HDMI issue many times with my company's computers.  Most of the time it gets into this stuborn state from a power outage but not always.  After trying just about everything, the only thing that really seems to work is to sign into windows with just the one monitor working with the display port, then remove the power cable so the computer goes off.  I then power the computer back on and now the HDMI displays on the second monitor without issue.  I hate to power off the computer while it's running but it fixes this issue.