u/AlpsClassic7467

Recently built a brand new PC. Had very bad instability first time using it, turned on x3d mode and this seemed to help majorly. After some instability still I decided to test the ram out. Both sticks show no errors when running individually but errors show up when both sticks are in. The errors are brought up when doing the CPU+RAM test on OCCT, it says “errors) Found on physical core 80 - logical core #0”. Luckily I have another PC to test these in, and I found that they work perfectly fine.

It seems the CPU is the issue. Before I request a return is there anything I’m missing which can fix this issue? Should I run memtest86 just to be sure it’s not the ram? From what I understand memtest86 tests the ram and no other component makes a difference to its results, correct?

Specs incase they’re important

7800x3d
9070xt power color reaper
Msi pro b840m-p
1tb gen 3 ssd
Corsair vengeance 5600 cl36 2x16

I bought it used a few months ago.

Before doing so I upgraded my mobo CPU and ram, MOBO had a missing pin but still worked fine. I used the new MOBO etc. with a 5070 and maybe a 6800xt, both worked fine.

On using the 7800xt with the same setup as the 5070, I noticed I had some minor issues, like driver errors, maybe a single flash of black on my screen (this might’ve not happened I can’t remember all too well.), just general issues which didn’t bother me too much, I put them down to AMD instability.

At some point, I’m not sure if this was before or after I had these minor issues I just mentioned, I updated my GPU drivers and i noticed that the issue got a little worse/more prominent or the the minor issues had just started. Again, can’t remember exactly what happened.

Over the last 2 weeks, I’ve been experienced driver crashes much more frequently, usually when not doing anything demanding - Eg. Opening steam and repeatedly crashing, then it being fine again after a while or a restart. Some crashes in GTA but my friend had these issues to with his 7000 card in GTA.

Over the last few days, these driver crashes have continued as normal, with 2 leading to my computer being frozen and having to long press the power button to switch off. Both times on starting my computer everything seemed normal until I realise that the GPU drivers seem to have been uninstalled - when I open adrenaline it says I need to install the latest version of the software, I click ok and it goes to install but just repeats the same thing and over and over. DDU and driver reinstall gets everything back to normal after one of those freezes.

One of those freezes was today, and I noticed some artefacting on the frozen screen. I’ll see if I can upload a picture. That’s the only time I’ve seen artefacting.

The GPU was bought used.

I believe that’s all there is to know.

The fact the artefacting happened as the PC crashed and the drivers uninstalled makes me think the artefacting was a driver issue and not hardware.

The SSD has also been swapped motherboards and a few different GPUs, maybe some of the drivers haven’t been fully wiped or something and it’s causing this. I’ll do a full reset if it comes to it. I’ve also had some WiFi issues and some research said it could be some leftover drivers so I thought it could apply here aswell, even if I’m using DDU.

I do have another m GPU I can test in this rig, so I guess that could rule out the motherboard or anything else. I’ll soon have another PC I can test the 7800xt in to see if it has the same issues there. Then we have our answer, but for now I want to hear what you think it might be?

Thanks for your time.