Just bought a new ROG CROSSHAIR X870E APEX motherboard. Flashed the latest BIOS on it (Version 1715, 15.79 MB 2025/09/25)/ CPU is AMD 9 9950. After a ridiculous long memory training session, motherboard seems stuck on code 64: "CPU DXE initialization is started." Memory installed is 2x G.Skill Trident Z5 Neo RGB F5-5600J4040D48GX2-TZ5NR. I am, however, not able to enter the BIOS any more. And the motherboard said the BIOS had been flashed successfully.
GPU installed is RTX 5090.
