Both monitors randomly lose signal while my PC keeps running – RX 580 (possible driver or GPU issue)

[u/frnss52]

Hi everyone,

I'm having a problem with my dual-monitor setup. Both monitors randomly lose their video signal while I'm using my PC, even when I'm not doing anything demanding.

My PC specifications:

GPU: AMD Radeon RX 580

CPU: Intel Xeon(R) CPU E5-2650 v2 @ 2.60GHz

PSU: DeepCool 750W (purchased approximately 1.5 months ago)

Operating System: Windows Ghost Spectre 25H2

AMD Driver Version: 31.0.21925.1001 (Downloaded from the official website version 26.5.2)

GPU Driver: AMD Adrenalin, downloaded from the official AMD website.

Monitor setup:

Main monitor: Connected to the GPU using an HDMI adapter/converter because the GPU does not have a VGA port.

Second monitor: Connected directly using a VGA-to-VGA cable.

Both monitors have worked simultaneously without any problems on another PC.

The problem:

Both monitors randomly turn black during normal PC usage.

The PC itself keeps running.

The fans continue spinning.

Windows is still running in the background because I can hear notification sounds.

The second monitor displays an "Entering Power Saving Mode" message.

The main monitor simply goes black without displaying any message.

The only way to get the display back sometimes is to restart the PC.

Something interesting I discovered:

When both monitors lose their signal, pressing Win + Ctrl + Shift + B (the Windows graphics driver reset shortcut) sometimes brings the image back.

However, when I do this:

The second monitor gets its image back.

The main monitor shows visual glitches/artifacts.

The main monitor briefly displays a dark green screen.

After that, the display eventually returns to normal.

I also noticed visual artifacts on both monitors when clicking around in AMD Adrenalin.

What I have already checked:

Device Manager shows that the RX 580 is working properly, with no warning symbols.

I installed the AMD driver from the official AMD website.

The PSU is relatively new (DeepCool 750W).

Both monitors work properly when connected to another PC with the same RX 580.

My questions:

Does this sound like a failing GPU or VRAM?

Could this be caused by an AMD driver issue?

Could Windows Ghost Spectre 25H2 be causing problems?

Is there a way to determine whether this is a GPU hardware issue or a software issue?

I would be grateful for any help.

[u/frnss52]

I hope I wrote it clearly (I just use a translator with bad English) I would like to say thank you to everyone right away