AMD Ryzen 7 5700x3D upgrade - Not Booting

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   I have a Fatal1ty B450 Gaming-ITX/ac motherboard with 16GB of memory and an AMD Ryzen 5 3400G cpu. (the system was working fine for almost 5 years)

One week ago, I bought a Ryzen 7 5700x3D processor.
After installing it, the pc would not boot. Black screen without posting. I press F2, but not able to get into the BIOS, the only way I can do is to long press the switch and shutdown the computer.
Before I install the new Ryzen 7 5700x3D processor onto the Fatal1ty B450 Gaming-ITX/ac motherboard, I did flash the BIOS to version 10.31 (Beta). After the first try with black screen, I did flash the BIOS to version 8.01 (Beta), but it is no luck to boot up with the combination of Asrock Fatal1ty B450 Gaming-ITX/ac and AMD Ryzen 7 5700x3D processor. 

I type this report to you by using my old CPU (AMD Ryzen 5 3400G). So I am sure the motherboard is OK with the old combination, it just can't work with Ryzen 7 5700x3D processor.

I have reset the CMOS as well, and no luck.

Can anyone help?

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adktk Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 02 Feb 2025 Status: Offline Points: 20	Post Options Post Reply Quote adktk Report Post Thanks(0) Quote Reply Topic: AMD Ryzen 7 5700x3D upgrade - Not Booting Posted: 02 Feb 2025 at 10:27pm
	I have a Fatal1ty B450 Gaming-ITX/ac motherboard with 16GB of memory and an AMD Ryzen 5 3400G cpu. (the system was working fine for almost 5 years) One week ago, I bought a Ryzen 7 5700x3D processor. After installing it, the pc would not boot. Black screen without posting. I press F2, but not able to get into the BIOS, the only way I can do is to long press the switch and shutdown the computer. Before I install the new Ryzen 7 5700x3D processor onto the Fatal1ty B450 Gaming-ITX/ac motherboard, I did flash the BIOS to version 10.31 (Beta). After the first try with black screen, I did flash the BIOS to version 8.01 (Beta), but it is no luck to boot up with the combination of Asrock Fatal1ty B450 Gaming-ITX/ac and AMD Ryzen 7 5700x3D processor. I type this report to you by using my old CPU (AMD Ryzen 5 3400G). So I am sure the motherboard is OK with the old combination, it just can't work with Ryzen 7 5700x3D processor. I have reset the CMOS as well, and no luck. Can anyone help?

ScottG Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 14 Nov 2024 Location: Wisconsin Status: Offline Points: 70	Post Options Post Reply Quote ScottG Report Post Thanks(0) Quote Reply Posted: 04 Feb 2025 at 2:25pm
	Have you tried dropping the bios back down to the latest non beta? Try the 5.20 version it should work, even with this it should boot. According to the CPU compatibility page it has been validated to work with 10.06 Good Luck
	ASRock B550 Taichi Ryzen 7 3700x Gskill Trident Z RGB 16x2 3600 TeamGroup M.2 NVME MP44 1tb Acer Nitro Intel ARC B570 10gb SeaSonic GX-750watt Gold be quiet! pure base 500

neeks34 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 19 Feb 2025 Status: Offline Points: 15	Post Options Post Reply Quote neeks34 Report Post Thanks(0) Quote Reply Posted: 19 Feb 2025 at 12:11pm
	Same exact problem here- same mobo and CPU and cannot get display, but old CPU works fine. Has anyone figured this out? I'm sad, wasted hours trying to fix this.

eccential Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 10 Oct 2022 Location: Nevada Status: Offline Points: 5445	Post Options Post Reply Quote eccential Report Post Thanks(0) Quote Reply Posted: 19 Feb 2025 at 11:52pm
	Wait a second. So you went from 3400G to 5700X3D.... You do have a GPU, right? 5700X3D (or any AM4 CPU without a G in its name) doesn't have integrated GPU, so you can't use any of the display output ports on the motherboard. You have to have a discrete GPU.