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Help! New computer, audio issues, CPU at fault?

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July 17, 2013 11:27:51 AM

So I built my second computer and everything was working great except for one issue. Anytime I moved my mouse I would get a faint electronic noise coming from my speakers/headphones. If I opened a window or scrolled up or down the noise would be a little louder and I could hear each little movement of the mouse. This would happen from every single 3.5mm audio port that I have, BUT not on HDMI. Now I have searched the web over and looked at pretty much all the topics relating to this, with no solution. Here is what I've I've done to test each component to see what is causing this, and it's leading me to think it's the CPU.

Swapped Hard drives, Graphics cards, Power supplies, mouse/keyboard, tried on board graphics (a-10 processor), different ram. Most recently I returned the motherboard for a new one, and the problem is still there. I have the computer hooked up to a power strip, and my old computer works fine on the same power cord and mouse/keyboard/monitor, so it can't be a ground isolation loop. This is leading me to think its ether a grounding problem on my new case, or the CPU.

I should also mention that when I start up that computer, and have headphones on, everything is fine until right after the windows 7 animation stops playing, then it sounds like someone turned on a amp or something and you can hear that there is power running through the line. That's not really a problem as the noise is minimal, but when I move my mouse or do any action on the computer, I hear the electronic noise with each movement.

CPU - AMD A10-5800K APU 3.8Ghz
Motherboard - FM2A75 PRO4-M
Graphics - Sapphire HD 6870
RAM - Kingston HyperX Genesis 4 GB 1866MHz
Hard Drive - Samsung 840 Series 120GB SATA III
PSU - CORSAIR Builder Series CX430
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July 17, 2013 11:35:45 AM

Try the newest sound drivers. On your mb did you uses any rubber spacers on the mb standoffs. The standoffs should not have a insulator on them. There uses for grounding. Check to see that the rear io shield not grounding out on the mb. Check where the audio cables are routed. If there tied to a power cable you may get cross talk. The last check that your mic input is mutted. If it not it may be picking up case noise.
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July 17, 2013 11:35:58 AM

this is stupid, but what happens when you mute your sound from windows?

since the problem is when windows has started, i wuld guess its a driver issue
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July 17, 2013 11:41:07 AM

smorizio said:
Try the newest sound drivers. On your mb did you uses any rubber spacers on the mb standoffs. The standoffs should not have a insulator on them. There uses for grounding. Check to see that the rear io shield not grounding out on the mb. Check where the audio cables are routed. If there tied to a power cable you may get cross talk. The last check that your mic input is mutted. If it not it may be picking up case noise.


No spacers, just like it's suppose to be and the IO shield is fine. The first thing I did was check the audio and usb cables to make sure they weren't by the PSU or any other components, so it can't be that. I also tried swapping the HD audio connector for the ac97 and I had the same problem. My mic is muted, I disabled all audio inputs/outputs other then the headphones in the audio settings.

sarwar_r87 said:
this is stupid, but what happens when you mute your sound from windows?

since the problem is when windows has started, i wuld guess its a driver issue


Yeah I tried muting..

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a c 192 à CPUs
July 17, 2013 11:47:39 AM

This going to be a shot in the dark but it may not be your pc hardware.
Make sure your wifi router. Wifi and wireless mouse and speakers or headphone are not near each other. I gotten bad sound effects from my cheap cell phone and my pc.
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July 17, 2013 11:47:55 AM

good! and does it stop the sound? :p 

@smarizo: you have a valid point. but wouldn that mean that he should have the problem right after PC starts and not wait for windows to finish loading drivers? and it shouldn show any response to what you do with your mouse. :S

easy way to test it will be run the headphones from a mobile while the PC is running.
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a c 192 à CPUs
July 17, 2013 11:50:52 AM

Yah sounds like an electric motor over the speakers...changes pitch when the phone rings...also make sure wireless phones not near your pc too.
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July 17, 2013 11:59:16 AM

Muting did nothing.

Wifi router is in different room

Mouse and keyboard work fine on other computer so it can't be that.
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July 17, 2013 12:04:48 PM

Adonis1231 said:
Muting did nothing.

Wifi router is in different room

Mouse and keyboard work fine on other computer so it can't be that.


have you tried booting into UBUNTU from a USD/CD-ROM to see if you have the sound problem from there too?

if yes, than its a hardware, otherwise its a driver. once you know this you may be able to solve the problem better/quicker
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July 17, 2013 12:37:00 PM

Just tried linux, still have the sound whenever I move my mouse.

Now that I also think about it, my old computer did something similar, but much less noticeable sound. Could it be a bad outlet?
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July 17, 2013 12:56:03 PM

list all the common devices between the two system and see if help narrow down. most likely it is some kind or earthing or EM shielding problem.

you can rule out EM shielding problem by running the speakers from a separate device (ie. mobile) from the same location..

my speaker makes similar sounds, but only when i turn off my laptop and still keep the speakers connected. so i don bother too much about that.
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July 17, 2013 3:59:55 PM

I've narrowed the problem down to software.

For some reason after changing rooms to test a different power outlet, my computer loaded up with all sounds disabled. The sound icon in windows 7 had a X, and everything was gone and not even showing up on the list. But the noise was gone with the headphones!!

I reformatted to windows 7 again to try and fix it. But as soon as windows booted the problem came back, as MS must have installed the driver for it or something.

I don't know what to do now, I've already tried uninstalled the standard driver and only using the updated one from realtek.

The weird thing is, if I disable all the sounds myself in the sounds options, it won't work the same way.
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July 17, 2013 4:12:14 PM

Adonis1231 said:
I've narrowed the problem down to software.

For some reason after changing rooms to test a different power outlet, my computer loaded up with all sounds disabled. The sound icon in windows 7 had a X, and everything was gone and not even showing up on the list. But the noise was gone with the headphones!!


that was because the hardware went missing/driver went missing. does not mean iits software. because if it was, than you would have solved it on ubuntu,

if you have a spare sound card with a friend, borrow it for testing purpose. if it solves the problem, i suggest getting a cheapo sound card.

when you use your HDMI audio, do you use the same speaker?
also have you tested the speaker with some other device?
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July 17, 2013 4:58:29 PM

HDMI uses tv, and no problems occur.

I just updated my bios and that fixed the front pannel audio, and it shows up as headphones instead of speaker in audio settings.

But... The back connections still show up as speaker and make the horrible noise. I would use the front, but it has a light hiss like most front pannel audio has, but the original problem is now gone from the front pannel.

Too bad asrock boards suck, I can't remap the ports, even with reg edit the ports don't save after restarting the computer. Otherwise i'd just use the line in port which has 0 sound issues all together..
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July 17, 2013 5:36:03 PM

OK so I've made my default audio HDMI from the tv and it plays perfect. BUTTTT if I have my headphones also plugged in, even though they are disabled, just by having them plugged in makes them produce the noise. As if some current is running through them or something. The TV continues to play the audio fine regardless if the headphones are plugged in, but if they are plugged in they make the noise, even if not the default device/disabled.
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July 17, 2013 5:46:37 PM

Adonis1231 said:
OK so I've made my default audio HDMI from the tv and it plays perfect. BUTTTT if I have my headphones also plugged in, even though they are disabled, just by having them plugged in makes them produce the noise. As if some current is running through them or something. The TV continues to play the audio fine regardless if the headphones are plugged in, but if they are plugged in they make the noise, even if not the default device/disabled.


i am not surprised.

if you are sure ur headphone is not at fault, try to borrow a sound card from a friend or get a cheap one from ebay.

just for the heck of it, attach a wire from the rear IO shield to the wall to directly earth it and see if it help. its a long shot and will most like not work,
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July 18, 2013 4:30:04 AM

If the headphones work with a USB dac/amp then they are not at fault then right? Only when they are plugged into the 3.5.

I called asrock tech support and the guy basically told me to return the board since I'm having so much bad luck with it. I already returned one and got it replaced.
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