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xund123
Adept I

Can't enter Bios on Ryzen 7 5800X

Rig:
Motherboard: MSI B450 Tomahawk MAX

GPU: Sapphire RX 580

RAM: Corsair DD4 2x8GB

CPU: Ryzen 7 5800X (previous CPU: Ryzen 5 2600)

System Software: Windows 10 64

I flashed Bios to most recent update, but every time I try to enter Bios, i get black screen and nothing happens, windows however is booting.

I tried clearing CMOS and reinstalled BIOS update several times, but no effect. 

The moderboard does have EZ Debug LED's and the CPU-LED is lit, which means the CPU is not detected or failed, which is weird because windows is booting. I have an old Ryzen 5 2600 and with this CPU the LED is NOT lit and I can enter BIOS properly.

I also tried to enter UEFI Firmware Settings via Troubleshooting, which also leads to black screen.

I only connected a HDMI cable to the GPU and my keyboard should respond quick enough to activte Bios, but I only get black screen.

Further Troubleshooting would be great, however I suspect the CPU to have some issues.

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