Blackscreens while playing games (RTX3080)

Yes, I've done that. The PC has last been cleaned in April but it's hardly collected any dust as it's been built in Nov 2020 and not ran much. Replugged all the cables, including the PSU connection.

Fans and temp are alright. around 1620RPM and 60°C

It's like this already. Is that default?

This is still on my to-do list but might not be possible too soon, as the only other GPU I might have available is my brother's and he's playing games literally all the time and there's hardly ever a minute when he's not home while I'm home because I work more. Will try that as soon as I get the chance though.

Thanks a lot for the detailed response! HDMI handshake seems alright and it also happens as long as I only use one monitor. My current suspicion is that the GPU is broken in some way or another and it'd be a pain in the arse to get a replacement, even though I have warranty on it. Reinstalling Windows is more of a final-destination solution as I only ever have like 3 hours or so per day to spend on doing anything with the PC, and for some reason in the past this always made things weird, but back then I was even less knowledgeable about computers than I am now. Do you know, by any chance, if the MB chipset drivers might be able to cause this kind of issue? It's been a pain to even update the BIOS using the ASUS AI Suite (the update tool only came with an outdated installation that I had to apply over the recent one, fun times :D) and the MB chipset is separate from the CPU chipset as far as I know

Yet to do that, the Event Viewer was completely new to me until yesterday ^^' I'm in no way an expert, but I'll post anything it spits out as soon as it happens again

Thanks :D
sfc didn't spit anything out that seemed noteworthy, might check again.
According the HWMonitor logs the temps and voltages are alright, though the idle voltage of 0.725 seemed a little odd to me, but I'm not too experienced with this kind of thing.

Will have to look into MSI Afterburner, thank you for the suggestion!

Power supply is a player.
My only video card and power supply experiences (more than 1) is that I would get visual corruption, freeze and CTD.
Never recovery, yet I would not put it past the hardware developers to implement recovery to push out the return date of warranties.

Just like hard drives silently recover from bad sectors and move potentially corrupted data do available good sectors.
Kicks the warranty can down the road.
Any time SFC fixes something, its either memory issues or hard drive issues.

So, about the DIMMs.. My mate who helped be build the rig up was dead set on B1 and B2 being alright and there would not be any major advantage in doing it another way. The CPU cooling got in the way so we settled with this. I hope I got it correct but B1 and B2 are the 2 slots that are furthest away from the CPU, right? Those are the ones the RAM is in rn.
Please don't behead me but I have never heard of xmp until now.

PSU is all hooked up correctly from what I can tell, and I think if it hadn't been, issues would have occurred way sooner. The rig hasn't been changed or modified since Nov '20 when we built it except for software updates and stuff.

Also, unrelated, aber ich mag deinen Namen :D

Will report back as soon as it happens again and see what the Event Viewer has to say about it.

I used 2 8pins that came with the PSU, they were identical and nowhere else to be used when we were almost done hooking everything up so I assumed they're for the GPU. Hooked them both up with the first end, the 2 extension ends (or however you'd call those) are loose on each cable.

Thanks for the suggestion. I never used the Discord overlay and I doubt it'd be the reason here though, since the program itself turns black and the same happens to the Steam client and parts of my browser.

I never fiddled with GPU BOIS, do you have any advice on how to check and potentially upgrade this? I doubt they come with the NVidia drivers. Thank you!

My GPU is the Gigabyte RTX 3080 Gaming OC, and as I just realized that sounds an awful lot like it could be overclocked, eh? :D

I'll report back as soon as MSI Afterburner gives me some results. Thanks for the advice!

Thank you for the suggestion! So far I tried unhooking the older Toshiba HDD and one screen and the issue persisted. Will switch out the GPU in Wednesday hopefully, see if that gets me somewhere. Either the problem will persist or appear on my brother's rig, as I'll be switching to his 3070.

Hey, thanks for the suggestion. How do I best go about benchmarking my GPU or doing a stress testt to see if it triggers the issue? Is there a program you'd recommend?

Thanks for the suggestion. I'll switch out the GPU for another one on Wednesday and see what that does, if the problem persists I'll try the PSU aswell

Thank you for the suggestion! I already did a hard shutdown yesterday to do something else, would that be sufficient?

Thanks for the suggestion! One of them runs on 60, the other on 120. I already tried various things with resolution, vsync, framerate etc. Nothing made a difference, and in all honesty, the card shouldn't struggle with this either in my opinion.

Thank you! I pretty much ruled that out so far because voltage, temp, fan speed and mem usage remain stable no matter the load I put on it so far.

Are you sure? I think the Desktop Window Manager crashing is exactly what causes the black screens, but who knows what the cause of the crashing is.

edit: also you can just select some entries and save them seperately, which I assume is what this is. Not the complete event log.

Glad to hear your problem is fixed. Also agree that it is pretty wild for a controller to break a window manager. Whoever messed that up needs to step up their programming.

Wow, that is insane. I would've never guessed my controller unless maybe Event Viewer revealed a driver issue to me. Thanks for the recap.

Good thing it worked, i expected it to be the controller with what i found and it matched with what Inspec experienced and said, akward problem though.

Makes me check event viewer more too in the future, have a wonderful week too.