I'm speculating on a reason the A6 still works while two full-up CPU's fail POST in a very peculiar fashion. The problem has to be elsewhere.Ĭlick to expand.Keep in mind I'm just throwing out an idea about it being the GPU. But I agree, it won't help since the 1800x should work and it isn't. Don't go to AK0 as it's a Ryzen 3000 BIOS and might only make things worse. That's the latest BIOS built for 2000 series. I'd definitely consider an update to 7A37vAI.which is in a file named E7A37AMS.AI0. Look for anything that's not right, or doesn't look like the others, on both sides of the board. It's tiny and hard to see so use a bright light and magnification. You might also carefully examine the card-edge connector of both the mother board and the GPU. In fact, it might be the GPU that's causing this: do you have another GPU to try? anything at all would do. This starts to make sense considering you had a defect in the PCIe slot of the board you're replacing so it might have transferred to one of the GPU contacts it happens like that sometimes. I'm wondering if there's a defect in the motherboard that is only triggered with full CPU's, possibly related to enabling all 16 PCIe lanes since APU's only use 8 lanes to the the first PCIe slot. And the thing is, you should have been able to make all the updates with the 1800X meaning the A6 wasn't necessary. That's what makes no sense: why it works with the A6 but not a Zen1 CPU. I will post another reply with the results, I hope this is it and it's user error.Ĭlick to expand.I think every version should work with an 1800x, all the way back to the very first (except vK0). I have not updated the chipset driver, and will be doing that immediately. This is the same for both Ryzen CPUs, however with the A6 the computer is able to complete POST and boot normally. I do not have a buzzer on the mobo to hear if a beep code is being played. So I end up with no debug lights lit, but my computer is still in POST (no display, all fans at full speed). What is happening is the CPU debug light stays on for about 2 seconds (normally half a second), and then it goes out as if it completed the check, but it doesn't move to the next component as it should. However, if I forgot to insert RAM, the CPU light would flash, then RAM light would stay on, no other lights. For instance, a normal post has each light(CPU, RAM, VGA, BOOT) flash as it tests the component, then the next one flashes as it gets tested. Normally if something was wrong the debug light for that component would stay lit. Not too sure what it could be at this point, I can see the different bios versions displayed in bios.Ĭlick to expand.When I try to start they computer it stops mid post. I have tried 1 stick, 2 stick, 4 stick in all combinations I have swapped ram, both speed and slot, and no difference (2x 8GB 2666, 2x 16 GB 3200) I have let the computer sit mid post for an hour and no difference. I have taken out the CMOS battery for about an hour and no difference. post, bios, m-flash, reboot, select aio file.I went to the MSI website and checked the compatibility section for my mobo and cpu, I needed BIOS AC, flashed that and tried again with both chips, still won't post. So I then took my old Ryzen 3 1800x and tried that with both BIOS versions, didn't post. Swapped again and updated to latest beta (AI), and it still didn't work. So I bought an A6-9500 and updated to the latest stable bios (AKM), checked out the speed (abysmally slow), and then shut down to swap CPUs. Obviously when I first put the CPU in it didn't post, needed to update the BIOS. Replaced my old B350m Bazooka with a Mortar Arctic due to a broken PCI slot and only having dedicated GPU.
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