9800X3D Noctua Build

[Nitefly]

I think the only time I've seen that exact symptom turned out to be a faulty batch of monitors. It does seem too coincidental to be just after your open card surgery though - although still worth testing. You could always boot a live linux CD or memory stick rather than reinstall. If it happens in that too, you know it isn't the Windows install. Doesn't necessarily prove that it's Windows if it doesn't flicker as it's a very different setup but it's quick, easy and non-destructive.

Thanks! I’m also using the same monitor for my work MacBook and there doesn’t seem to be an issue there, although that is a USB-C display input, so different.

I do also have my old PC which I can put the card into… which is probably the quickest way of determining if it was self-sabotage!

The only windows event viewer logs that might be related are windows security log-in things… but I’d be surprised if that was doing anything.

 

[Cenedd]

It was a while back so my memory is a bit sketchy. I have a feeling it only affected the DisplayPort connection of the monitors with the fault so it's possible that a different connection is unaffected. I know we went through different cables, different drivers and even different cards - I think we found that AMD cards seemed (at least at first) to be less affected than Nvidia but eventually we swapped out the monitors and the problem went away. Nothing, as you say, in the event logs or anything else to shed some light on the issue. I think all you can do is what you're already doing - swap stuff round until you find the one common element....and then swear about it!

 

[Nitefly]

Right, it's been going for 40 mins solid on Heaven at 100% ... no sign of anything weird. Maybe it's just the games I've been playing! Dammit... I bet it'll happen later...