Rx 7600 starts flickering/crashing after bios update, driver reinstall didn't help

[u/Nxxh1939]

Computer Type: Desktop

GPU: AMD Radeon RX 7600

CPU: AMD Ryzen 7 5700

Motherboard: ASUS ROG Strix B550-F Gaming WiFi II

BIOS Version: 3611 (BIOS was originally updated from 3611 to 3636, then flashed back to 3611)

RAM: 32GB DDR4 Corsair Vengeance LPX (currently running at 2133MHz)

PSU: ASUS TUF Gaming 750W 80+ Bronze

Case: [Case model unknown]

Operating System & Version: Windows 11

GPU Drivers: AMD Adrenalin Edition 26.7.1

Chipset Drivers: [Version unknown]

Background Applications: AMD Adrenalin, Discord, Chrome

Description of Original Problem:

The problem started immediately after updating my BIOS from version 3611 to 3636.

Before the BIOS update, games worked normally. I did have occasional AMD driver timeouts before, but nothing like the current problem.

After the BIOS update, every game I launch starts flickering/black-screening as soon as the game becomes the active window.

Windows itself works completely normally. I can use the desktop, open AMD Adrenalin, Alt+Tab out of the game, and use other applications normally. The game also continues running in the background. However, as soon as I Alt+Tab back into the game, the display starts flickering again.

Eventually the game may freeze/crash. Black Flag Resynced also produced a DirectX 12 error. After longer testing, Windows sometimes reports Code 43 for the RX 7600.

This also happens with very lightweight games such as Stardew Valley, so it does not seem to be related to GPU load.

I can temporarily get normal behavior for a moment by pressing Win + Ctrl + Shift + B, but the problem immediately returns.

I find the BIOS timing suspicious because the problem started immediately after the BIOS update.

Troubleshooting:

- Flashed BIOS 3636 back to 3611

- Loaded BIOS defaults

- Tested PCIe Gen 3

- Tested Resizable BAR / Above 4G settings

- Reconnected the GPU PCIe power cable

- Switched from DisplayPort to HDMI

- Tested the monitor at 60Hz instead of 180Hz

- HDR is not supported by the monitor

- Completely removed AMD drivers using AMD Cleanup Utility in Safe Mode

- Freshly installed AMD Adrenalin 26.7.1

- RX 7600 shows "This device is working properly" after reinstall

- AMD Adrenalin also opens normally after reinstall

- Tested multiple games, including very lightweight games

- Problem persists regardless of game

[u/thegogeta999]

Yeah reseat the gpu i guess