Electronics > Repair

Motherboard problem? Asrock Z370 PRO4 PCIE port issue

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Twoflower:
Had a similar issue. In my case the picture froze everything else still worked. The problem happened in Windows and Linux; even swappend GPU from one generation to the next.

I noticed that I could still SSH to the box while the picture is frozen. And the dmesg indicated that the "GPU has fallen off the bus". And actually that really brought me to the solution: I supported the GPU on the front side a little and it seems that the problem is gone :-) I don't thing that the error message meant to be so literal as it was in that case.

I Assuming you have a tower with the GPU is hanging horizontal in the slot. That your problem gets better if you switch to 4x might indicate the same issue as the disabled lanes are located closer to the front.

You could try to put your PC on the side or support the GPU a little to reduce the load on the connector.

Bryn:
xboxgamer, try any of these solutions:

* The top solution would probably be to reset the BIOS settings to their factory defaults (and can be done by removing the CMOS battery from the motherboard for a few minutes, or using a CMOS reset jumper if you have one)
* If you have other PCIe cards lying about, test them in the same slots as the ones you had (to determine if the issue is to do with the specific card you used). Also test with a spare power supply if you have that as well
* You mentioned earlier that you have a crashed driver, so how about uninstalling it and reinstalling it to the latest version if possible
* If none of these work, try to make sure that the motherboard is not "shorting" with the case (meaning that its performance can be affected by improperly installed standoffs, such as RAM sticks and PCIe cards)Hope any of these work out for you, even though you said you have a new one to do you just now.

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