RX 7900 XTX Not Recognised After Windows Update: SA Fix

Quick Answer

If your RX 7900 XTX disappears from Device Manager after a Windows update, the fix in nine out of ten SA cases is a clean AMD driver reinstall using DDU in Safe Mode, followed by the latest Adrenalin package. A loose PCIe power cable or a BIOS resizable BAR toggle that flipped during the update accounts for most of the rest.

Why Windows Updates Break the RX 7900 XTX

Cumulative Windows updates frequently swap the working AMD WDDM driver for a generic Microsoft Basic Display Adapter, especially on builds shipped between January and March 2026. The card is still physically detected by the board, but the OS refuses to load the proper kernel driver, so it vanishes from Device Manager or shows a yellow exclamation mark. Loadshedding-induced hard reboots during an update can also leave the driver store in a half-written state.

Step-by-Step Fix for SA Users

Boot into Safe Mode (hold Shift while clicking Restart, then Troubleshoot, Advanced Options, Startup Settings, F4). Run Display Driver Uninstaller, choose AMD, and pick Clean and Restart. Once back in Windows, install the latest Adrenalin 25.x WHQL driver downloaded directly from amd.com. Reboot, then confirm the card appears as Radeon RX 7900 XTX under Display Adapters. If it still doesn't show, reseat both 8-pin PCIe cables and check that PCIe slot 1 is set to Gen4 x16 in BIOS.

When to Suspect Hardware, Not Software

If DDU and a fresh driver don't help, try the card in another PCIe slot or another PC. Check the 12V rail with a multimeter or PSU tester, particularly if you're running a 750W unit on a card AMD recommends a 850W minimum for. Bad weather and surges during loadshedding restoration are a common killer of GPU power stages, so plug the rig into a surge-protected line interactive UPS going forward.

Frequently Asked Questions

What should SA buyers know about RX 7900 XTX driver issues after a Windows update?

The issue is almost always software-side. A DDU clean install in Safe Mode plus the newest Adrenalin driver resolves it without RMA in most local cases reported to our workshop.

How does the RX 7900 XTX compare for reliability in South Africa?

Reliability is solid when paired with a quality 850W+ 80 Plus Gold PSU and a UPS to ride out loadshedding transitions, which protect the VRMs from dirty power events.

Is the RX 7900 XTX or a replacement gaming PC available from Evetech?

Yes, Evetech builds and ships pre-tested gaming PCs with AMD and NVIDIA flagships, all backed by local warranty, so you can swap the rig out if a card has truly failed.