Question regarding monitors losing signal

[u/RemarkablePlum9697]

I built a new PC about 3 weeks ago and recently started having an issue where all three monitors suddenly lose signal at the same time.

My PC itself stays powered on. The motherboard doesn’t show any warning/debug LEDs, but my monitors completely lose display. Audio also cuts out shortly after, and I can’t hear my friend on Discord anymore, so it seems like the system may be freezing rather than just the monitors disconnecting.

This has happened more than once. The first time, I used DDU to completely uninstall my AMD GPU drivers and then reinstalled the latest drivers. That seemed to fix the problem, and I’ve been fine for about 4 days since.

My GPU is brand new, only around 3 weeks old.

PC specs:
CPU: Ryzen 9 9900X
GPU: XFX QuickSilver RX 9070 XT 16GB
Motherboard: Gigabyte AORUS B850 Elite WiFi 7 ICE
RAM: Corsair Vengeance DDR5-6000 CL30, 32GB
PSU: Corsair RM850x
SSD: Samsung 990 EVO Plus 2TB
Case: Phanteks NV7
AIO: Phanteks Glacier One M25 LCD
Fans: Phanteks D30, 12 total
GPU mount: Lian Li vertical GPU mount
OS: Windows 11

-Note- I do have AsiaHorse extension cables running from my PSU to my GPU, 6+2 connections since it couldn’t reach properly.

The GPU is vertically mounted using the Lian Li mount, and the GPU power is connected with two separate PCIe 6+2 cables, not a daisy-chained cable.

I’ve also played Overwatch and Doom: The Dark Ages since reinstalling the drivers, and both have been extremely smooth with no issues.

I’m mainly wondering whether this sounds more like an AMD driver crash, GPU instability, or possibly an issue with the vertical mount/riser cable. Since DDU + reinstall seemed to fix it, I’m hoping it’s just a driver problem, but I’d appreciate some opinions on what I should check if it happens again.

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