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Booting stops at POST CODE 9F

Rabitza
Level 7

Hello.

I have ROG CROSSHAIR X870E HERO
(I replaced EVGA by ASUS recentry.)

I want to disable wifi and bluetooth.
Becouse LinuxOS is unsupported to Network controller MEDIATEK 7927.
I have heared this improves lagging of game screen.

I chenged disable that Wifi Controler and Bluetooth Controler in BIOS settings Onboard Devices Configuration, then PC doesn't complete booting process.

I saw POST CODE display 9F still stuck.

9F is "Reserved for future AMI codes" according to manual.

Does anyone know why booting cannot be completed?

BIOS Version: 1605
CPU: AMD Ryzen 9 9950X3D
Memory: Crucial Pro CP2K64G56C46U5 DDR5-5600 64GBx2
SATA 1: INTEL SSDSC2BA400G3(DC S3700) efi,fedra42
SATA 2: INTEL SSDSC2KG480G8(D3-S4610) windows11
SATA 3: WDC WUH722020ALE6L4
M.2_1: D_BLACK SN8100 WDS400T1X0M
PCIEX16(G5)_1: INNO3D GeForce RTX 5090 X3 OC
PCIEX16(G5)_2: Intel Ethernet Controller E810-XXV
ATX PSU: Seasonic SSR-1300TR2 PRIME TX ATX3.0 1300W

I use CPU Graphics on Motherbord to monitor.
None of NVIDIA GPU ports is connected.

Thank you for your help.

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