Problem with driver and monitors

[Zoorasg]

Hello everyone! I have a problem with my monitors and intel graphics drivers. I have a fairly old system on lga 1150 and i3-4170 processor. After a clean installation of windows there are no drivers (I temporarily disabled internet access), the resolution is only 800x600 and the image is via HDMI. In the BIOS and when loading the OS, the image is also via HDMI, but after installing the drivers version 15.40, the image is only via DVI, but in the BIOS and when loading the OS it is HDMI. I thought that the problem was in the HDMI-HDMI cable, but after replacing it a couple of times I did not get HDMI. I also tried several different monitors of different years, but also without success. I really hope that you can help me. Thank you!

[n_scott_pearson]

Ok, you mention DVI and HDMI. This would imply that your motherboard has connectors for both. The question is whether your motherboard utilizes separate GFX output channels for the two connectors (as opposed to some sort of shared configuration using a single GFX output channel). I cannot say without seeing some sort of technical spec for the motherboard. Do you have such a spec?

...S

[Zoorasg]

No, my motherboard does not have DVI connector, only HDMI and VGA. My motherboard is esonic h81-btc-king

[Zoorasg]

I tried different versions of drivers from the latest to the old ones, but nothing works. I don't know what's wrong, but on my laptop when I connect the monitor it is defined as a monitor and I can select it as the sound output, but with my desktop pc it doesn't work like that

[n_scott_pearson]

So you're saying that you have two monitors connected to the HDMI and VGA connectors on the back of the motherboard? Have you ever had two monitors connected previously? Were both monitors working independently and simultaneously within Windows?

I haven't been able to find any technical documentation that would verify it one way or the other, but I have a feeling that these connectors are sharing one of the processor's graphics output channels. In this case, only one of them is going to work - and which works depends upon the initialization of the processor's graphics engine for that channel. That is, if it is initialized for HDMI output then the HDMI connector works and if it is initialized for VGA output, then the VGA connector works.

...S

[Zoorasg]

No, I only use one monitor connected via HDMI to the HDMI port on the motherboard. Only one monitor

[n_scott_pearson]

Hhmmm, I understand now. Something to try: Within BIOS Setup, configure the HDMI connection to (statically) be the primary connection.
...S

[Zoorasg]

I don't see this setting in the BIOS, there is only an item related to HD sound and HDMI, but it is enabled, and there is no other item about HDMI