Mind Numbing AM5 Experience

Build Details

ASRock X870 Steel Legend WiFi (Motherboard #2)
MSI 4080 (GPU #2)
Ryzen 9900X (CPU #2)
Corsair RM850X (I have also tried an Asus Prime 850W Gold and GPU wouldn't even power up)
GSkill DDR 5-6000 2x32GB (I have also tried Crucial Pro Series)


In December of 2024, I built a new PC with all new parts. The exception being the 4080 from my old build. Everything worked fine for 60 days, and then the GPU stopped being recognized with Windows throwing a "Windows has stopped this device because it has reported problems. (Code 43)". Initially, I suspected a GPU issue and sent my GPU off to MSI who said it was fine and sent it back. I sent it back to MSI again and they sent back another 4080. Same error. The only way I get display output is via the motherboard.

Since then, my system boots only via the HDMI on the motherboard (Constant error 43, GPU fans are spinning). I have swapped out every component including the motherboard, CPU, RAM, GPU, and Power Supply). Today's experiment consisted of new RAM (no change) and a new PSU. The GPU wouldn't even power up on the new GPU and remained unrecognized. Although the system booted up again fine via the HDMI port. I then swapped back to the original power supply and the GPU powered up, but error 43 again. I have never had such an experience with a home-built PC. Any recommendations would be welcome. I am thinking perhaps something is shorting, but I disassembled everything and have replaced everything with the same error. It all worked fine for the first 60 days or so.

you replaced all the hardware?

idk if its a troll post or not,

Have you tried simply running different os like linux? if you are determined to use windows have you tried "reinstalling system multiple times", "clear installing gpu drivers" like windows users do?

error 43 is a driver initialization problem

I have reinstalled windows. No change.

Hello, sorry you're having trouble.

Have you checked in the BIOS under Advanced --> Graphics Features that the Primary Graphics Adapter is set to PCIe Adapter/PEG?

Double check to see if it is set to Internal/iGPU or External/PEG/PCIe Adapter etc.

If it is set to Internal or iGPU or Onboard or Integrated, change it to External/PCI Express/PEG (I'm not sure how it will show up so I'm showing you how they are usually labeled).

Then Exit--> Saving changes on exit...

If you have a monitor already connected to the GPU wait to see if it comes online, if not, then swap ports from the onboard HDMI over to the GPU or to the appropriate input on your monitor, not sure how you have it set up. Ideally you should wait a few seconds to ensure the computer is booted before swapping the ports if the screen is still blank while using the onboard HDMI after this change; which it shouldn't be, but it could be, depending on settings and other factors. It's just not helpful to the GPU if you are plugging a display into it while it's trying to post/boot and removing a display from the onboard port while trying to boot, that could cause a failure to boot.

Once windows is booted check to see if the device indication changes from type 43 to normal or another status for the 4080 GPU. If it is normal then there was your problem, if the problem persists, then the only thing you can try now is switching displays, this can be a problem in very rare cases of certain combinations of Mobo, CPU, GPU, and Display believe it or not. If you have another display you can test with, connect it and then perform a reboot and see if the situation improves. If this seems to work, then the problem is a compatibility issue with the Display and the GPU more than likely, and you may wish to contact Nvidia or the appropriate board partner/brand of your card to let them know.

If problems still remain then I would suggest you completely clear your CMOS settings. To do so, first completely power off the system and disconnect the main power cord from the wall socket or the back of the PSU. Then using Jumper 22 on the lower mid-right of the board by shorting the pins with a jumper cover or with a metal conductive object for about 5 seconds, or you could simply remove the battery from the board (the round CR2032 disc battery), again waiting about 5-10 seconds before replacing it back onto the board. This will clear your CMOS/BIOS settings, now you can reconnect the power and turn the PC on. It may take a moment to boot as the settings have been cleared and memory will need retraining and bus enumeration etc., as soon as you are able to enter the UEFI BIOS, enter the UEFI BIOS via the <F2> or <del> key as soon as the splash screen or POST screen shows up.

Once in UEFI BIOS press <F9> to load optimal defaults, then press <F10> to Exit while saving changes and reboot. If <F9> doesn't work, go to the Exit screen / <ESC> and select Load Optimal Defaults and press enter and then YES. Then Exit, Saving Changes. Ensure the display is connected to the GPU and see if the situation improves. If it is resolved, then be sure to go back to the UEFI to ensure your DDR5 speeds are set to your desired 6000MT/s rate and the DDR5 voltage is sufficient and correct for that speed, or use the appropriate EXPO/XMP profile. Then Exit Saving changes, and ensure that things are still working correctly with the GPU and that the memory speed is correct in Windows by checking Task Manager (CTRL+SHIFT+ESC within Windows), then clicking on Performance, then Memory, and looking at the detailed Speed indicated.

If after all the above steps/methods, if things are still not working correctly, I would highly suggest that you contact ASRock support directly for further assistance. I do hope that this does help though to relieve your issue and frustrations. Good luck!

-Spikeypup