Gigabyte 890gpa-ud3h crackling audio

[wanner]

Right well earlier it came up in another thread a similar problem and the OP found that it was his USB3 drivers causing it. As he wasn't even using USB3 he disabled it and all was well again. Worth a try I think.

I think I have disabled it now. I uninstalled the drivers and disabled it in device manager. However im not sure whats going on there, alot of USB stuff. also I dont understand why there are four NVIDIA High Definition Audio and one Realtek High Definition Audio? I have installed the latest drivers from Realtek.

Is it supposed to look something like this...?

I just verified that I also get crackling sounds when pluggin in headphones at the front.

In that case also check that your PC has good continuity with the earth on your ring main in the house. It could be a static build up.

You have to excuse me. I dont quite follow (english not my native language). I understand that the earth could cause problem but im not sure what you mean with ring main? What can I do to check it? I live in an apartment btw . I guess I could try connecting my computer to another outlet?

But since i still get spikes in DPC Latency Checker i get the feeling that some device/driver is acting up.

[wanner]

For some reason only 2/4 USB inputs work on the back (the upper two). Are they supposed to be disabled or something when the ports at the front are active?

[Dark Mantis]

I didn't realise that you weren't local. Where are you located? You could try another outlet and another lead if you have a spare one. In Device Manager you have device  near the top with a question mark on it. Underneath it has a Universal Serial Bus Controller. Right click on that and select "properties" and then disable it.

[wanner]

I didn't realise that you weren't local. Where are you located? You could try another outlet and another lead if you have a spare one. In Device Manager you have device  near the top with a question mark on it. Underneath it has a Universal Serial Bus Controller. Right click on that and select "properties" and then disable it.

Sweden.

The "Universal Serial Bus Controller" is disabled already, thats what the little arrow on it means. It wasnt a questionmark on it before i disabled the drivers.
Any idea why only 2/4 of my USB inputs on the back is working now? From what i recall all worked before, but im not sure. Are they disabled when the inputs on the front are active?

[Dark Mantis]

Which ports on the back are not working now? what colour are they?

[wanner]

In another forum a guy mentioned that he had similar problems with the same motherboard. He claimed that when he removed his motherboard from the case the problems disappeared, he then replaced his screws that fastens the motherboard with ones with smaller screwheads which solved the problem.
I have taken a picture showing the screws I used to fasten the motherboard in the case.

I am pretty sure that they are the ones meant to fasten the motherboard. Do you think it looks ok?

[wanner]

Which ports on the back are not working now? what colour are they?

Oh, i didnt even realize they had different colors. They are blue and i noticed they say USB 3.0. I guess they are not working since i disabled the USB 3.0 controller .

[Dark Mantis]

They are not the correct screws to fasten the motherboard down. If you look at the location points you will see that there are little solder points left around the screw holes, these are so the screws mak a good contact with the board and then through to the base(case). Sometimes if it doesn't earth properly through these screws you will get problems.

[Dark Mantis]

Which ports on the back are not working now? what colour are they?

Oh, i didnt even realize they had different colors. They are blue and i noticed they say USB 3.0. I guess they are not working since i disabled the USB 3.0 controller .

Yes exactly! But as that didn't seem to make any difference you might as well enable it again so that you can use them if you want to.

[wanner]

They are not the correct screws to fasten the motherboard down. If you look at the location points you will see that there are little solder points left around the screw holes, these are so the screws mak a good contact with the board and then through to the base(case). Sometimes if it doesn't eareth properly through these screws you will get problems.

Ah, i thought to myself that the screws should probably cover those solder points. However I am pretty sure I am using the "correct" screws that came with the case and were mentioned to fasten the motherboard. They say "M/B screw". But I guess im better off using different ones that actually cover the entire solder points, even if they are not the ones meant to be used.

[Dark Mantis]

Normally they are larger with a coarse thread and often a squared off top edges if you understand me. Just make sure that there are no points under the board that could short circuit the motherboard to earth like extra motherboard standoffs/mounts.

[wanner]

Here is a picture showing the different screws that came with the case



At the moment i am using the "M/B screw" to fasten the board to the case. I have also placed the "M/B stand" between the case and the board. Im thinking that i could use the "HDD screw" instead since the head is larger on that one the solderings will be covered?

They look like this

Just make sure that there are no points under the board that could short circuit the motherboard to earth like extra motherboard standoffs/mounts.

Hmm... im not quite sure I understand what you mean. As I mentioned earlier i mounted the board on the M/B stands, so the board has no direct contact with the case.

Also, i think i used the "FDD screw" to fasten the PSU to the case instead of the PSU screws, but that shouldnt matter right?

[Dark Mantis]

Usually the are more like the PSU screws especially in size. The motherboard stands are fine  but In would supect that you should only be using 9 of them, so make sure there are no extra ones behind the motherboard anywhere. The FDD screws wouldn't be any good for holding the PSU to the case as they are too small.

[wanner]

Usually the are more like the PSU screws especially in size. The motherboard stands are fine  but In would supect that you should only be using 9 of them, so make sure there are no extra ones behind the motherboard anywhere. The FDD screws wouldn't be any good for holding the PSU to the case as they are too small.

The PSU screws are pretty small, same size as the FDD screw. But i will change to the PSU screws for the PSU anyways (just makes sense ).

You are correct in that I am only using 9 of the motherboard stands, also only 9 screws (of course) to fasten the board to the stands.
What do you mean with "so make sure there are no extra ones behind the motherboard anywhere"? Extra whats? Extra stands? Do you mean if there are any parts on the backside of the motherboard that are connected to the case?

[Dark Mantis]

  "so make sure there are no extra ones behind the motherboard anywhere"? Extra whats? Extra stands? Do you mean if there are any parts on the backside of the motherboard that are connected to the case?

No, it's just that there would probably be extra holes that you could have screwed the two spare stands into and then when you installed the motherboard they would have shorted it out to earth/case.
As far as the screws are concerned I think the best thing is to use whichever ones fit best bearing in mind what we have discussed.