Problem occurs when restarting after installing new components.

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Smoofie
Member

213

01-15-2022, 09:59 AM

#1

I placed a fresh Ryzen 7 5800X3D CPU in, replacing my old Ryzen 7 2700X. I also got a new case, so everything was moved in. The issue is that the system won’t boot at all. Right after finishing setup, I noticed the yellow LED (dram error from the manual) then the red one (CPU error) flashing briefly—about 1 to 2 seconds. After that, it would boot and show the UEFI screen. If I pressed F2 in time or deleted it, it would open BIOS or launch Windows. It’s strange because the status changes unpredictably. First, the new CPU recognized (press F1 for setup), then BIOS started (noted RAM dropped from 3200MHz to 2400). Pressing F10 would load, but it restarts and either shows the Windows logo or an endless UEFI menu. It’s really confusing since I keep seeing different outcomes. After booting, I pressed F1 for setup, then BIOS started (also saw RAM drop), pressed F10 to load, it restarted, and then either the Windows logo appeared or an infinite UEFI menu opened. After about 3 seconds if I act quickly, nothing happens. I think the motherboard might be faulty. Before replacing it, I wanted some tips on how to fix it. I tried: removing CMOS, checking all power connections, cleaning dust from the CPU socket (nothing), using the old CPU, updating BIOS with Ez Flash 3 using just one DIMM slot, and booting over NVMe SSD (system partition). I used an Asus B450-F gaming AMD Ryzen 7 5800X3D, a new Gigabyte RX 5700 XT 2 NVMe M.2 1TB/512GB, a 250GB SSD, a 1TB HDD, and a Kingston Fury 3200MHz 2x16GB with Bequiet power supply (11.8A). After two attempts, I installed the new CPU twice to rule out installation issues. I unplugged and plugged the whole motherboard multiple times just to be sure. Now I’m trying the latest BIOS version.

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Serpenh33
Member

208

01-15-2022, 11:03 PM

#2

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JaminF
Junior Member

44

01-19-2022, 08:31 PM

#3

No, I didn't flash the BIOS with an old CPU to match a new one.

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pcplaya
Junior Member

48

02-01-2022, 11:50 AM

#4

It seems the new CPU was installed successfully and is booting now. Have you inspected the pins for any damage or bent connections? Also, did you reset the CMOS?

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xXJackaBoyXx
Junior Member

13

02-01-2022, 06:47 PM

#5

The boot configuration includes options like CSM and Secure Boot. Updating the BIOS clears these settings as well. Did you have BitLocker enabled?

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agossie
Member

156

02-01-2022, 07:59 PM

#6

I didn’t notice it, but that was on the previous motherboard. This one is brand new and works only with the Ryzen 7 5800X3D. SSDs and HDDs are identical, but the old BIOS can’t recognize any disks anymore.

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MikaMash
Member

51

02-01-2022, 11:05 PM

#7

I haven't used BitloxKer on any drive.

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lala10o2
Junior Member

3

02-03-2022, 07:04 AM

#8

I verified every pin on the CPU and motherboard thoroughly. The CMOS hasn’t been reset yet—should I? Just installed fresh BIOS on a brand-new motherboard.

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ostenvelez
Member

241

02-21-2022, 10:31 AM

#9

Right now you're my lifesaver Smile

The CSM made it work—drives and windows started up. Now I'm verifying everything is functioning properly (CPU speed, RAM performance, etc.)

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TheoMorell
Junior Member

25

02-21-2022, 05:17 PM

#10

For a smooth boot, enabling CSM is advised. Switching to GPT from MBR can help avoid similar problems later. https://www.windowscentral.com/how-conve...windows-10