Help! 50-series GPUs showing instability with a Z390 board

Posted by otters_creed@reddit | buildapc | View on Reddit | 9 comments

This issue has been driving me crazy lately so hoping anyone here can shed some light for me. So I recently took the leap to upgrade my 2080 super to the current generation, and I went with the 5070 Ti. For context, I have an Asrock Z390 Phantom Gaming 6 motherboard with an i9-9900kf. I also upgraded from a 750W bronze PSU to a Corsair rm850x. Everything I could find ensured me that even the latest generation GPUs would work fine with the board due to backwards-compatible PCIE and such.

So I got the card and the PSU and after installing both I booted up, applied the lasted Nvidia driver, and basically went right to gaming for several hours. The performance was awesome and I was loving it! Once I was done gaming I went to watch some YouTube and switched audio output from my headset to my monitor speakers (Nvidia HD audio)…and that’s when things went downhill. This prompted crazy distorted and robotic audio, and the whole display crashed. The next day, I spent basically the whole day troubleshooting—using DDU, checking BIOS updates and settings, resetting the card and all the connections, removing all audio devices, etc. but the instability was getting worse. It got to where I could only sometimes successfully boot into windows and if I did, even just opening a browser window and moving it would cause a display crash. And keep in mind the computer and the card would stay powered, I just had to hard reboot because of the black screen. It was even happening in windows Safe Mode and in the BIOS sometimes. So from this, I concluded the card must be defective.

I returned the card and exchanged it for the same model with a different manufacturer. I did the same things, and even this time resetting the UEFI to default settings beforehand. Same exact thing, except maybe even worse. Could only get to windows maybe a third of the time, and could barely make it through BIOS long enough to make any changes. It should be noted that everything works perfectly fine (including with the new PSU) on my old card.

So now, I have no other ideas other than the motherboard just can’t handle the connection speed or power delivery to the 5070 Ti, despite most agreeing it should work. My question is, am I right in thinking this? Am I missing something obvious? I just want to be thorough before I go and basically have to upgrade the whole system (mobo, cpu, ram).

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Phuzzyhead@reddit

I had similar issues with my 5080 Suprim on my Z390 ASRock Phantom Gaming 6. ASRock support has sent me a BIOS version 4.30H (4.30G is currently the latest downloadable) which fixed all the issues.

If this is still relevant to you, contact their support or I can send you the BIOS.

AnimalAvailable2920@reddit

Hi, I'm having same issue between asrock z390 taichi and 5080 graphic card. Could you share BIOS file?

Daxus7401@reddit

I have the same issue, weird audio shit and it would black screen and id have to restart. I bought a new PSU thinking it was a power issue, ive done all kinds of troubleshooting. I'm guessing its just the z390 board. A newer platform is prolly needed.

FlourDour@reddit

i have had this happen once. the other times were frozen video with audio stuck on a buzzing sound. going into bios and forcing pcie into 2.0 instead of 3.0 worked for me.

i5 9400f TUF z390 wifi changing from gtx 1060 to rtx 5060 ti

deleted_by_reddit@reddit

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otters_creed@reddit (OP)

Thanks for the feedback. It’s good to at least know someone else has experienced this too…I’ve come to that conclusion too

Hate_y0u@reddit

I have the same problem!

Asrock Z390 Extreme 4 + 9900K

I added a 5070 and everything is exactly as described.

To be honest, the system works more stably when you set GEN2 for the video card in the BIOS.

But even in this case, it works the same or worse than my old GTX 1080.

I suspect outdated software on the motherboard (last update in 2021). I want to try another one with fresh software.

There are many examples online of how the 9900K works with the 5000 series.

It should work fine!

Known-Permission626@reddit

I've been having a similar issue. Purchased a 5060ti, running it on a gigabyte z390 gaming X and it was working fine for a couple of days, then all of a sudden my screen would blank out. Tried every fix on the Internet to no luck. Apparently this is common putting a 50 series into older boards. As far as i understand it, it is something to do with the handshake between the card and the mb.