Static noise when connected to speakers with AC adapter plugged in

Silent Night

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Nov 24, 2014
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Hi, so about two years ago I bought a MSI GT683DXR barebones laptop. Ever since I had the thing it has made static noise through external speakers when it is plugged in to the AC adapter. It doesn't do this when just using the laptop speakers and it doesn't do this when it is running on battery power.

I finally made enough money the last year to build a home studio for music production and so I need this fixed as soon as possible and I would prefer to not buy a new computer. Some people online say that when this problem happens with a laptop it can usually be solved by using a different AC adapter.

The AC adapter I've been using that came with my barebones is this one: http://www.amazon.com/Adapter-ADP-180HB-ADP-180NB-PA-1182-02-Laptops/dp/B00XMBGV98/ref=sr_1_6?ie=UTF8&qid=1433911173&sr=8-6&keywords=ADP+180HB+B

Bonus Question:
The laptop underclocks everything when it is unplugged from the power adapter, so much that it makes gaming near impossible on battery. I tried Throttle Stop and it didn't help. Is there any way to bypass this?

UPDATE:
I have proper grounding. The surge protector I plug my computer into has a green light next to the word grounded which would be off if my grounding was faulty. I also tried the computer without the surge protector for a control test, same thing. On top of that I tried it at my place of employment and it did the same.

None of my friends have gaming laptops with 180W power adapters so I will pretty much have to order one replacement after the other from Amazon until I get one that doesn't make the noise. I also confirmed that the one I have, Delta, is the stock adapter.

Found these off-brand replacements that I'll try:
http://www.amazon.com/gp/product/B00HHP52L8?ref_=cm_cd_al_qh_dp_t
http://www.amazon.com/gp/product/B00ME6OSIS?ref_=cm_cd_al_qh_dp_t
http://www.amazon.com/gp/product/B00CY6U3ZU?ref_=cm_cd_al_qh_dp_t

More info on the noise:
The noise sounds like computer parts moving like the hard drive mixed with static.
 

viveknayyar007

Distinguished
Hello Silent Night

There can be a few reasons for this issue including:

> Improper Grounding > In case your place has improper grounding, the issue may occur. To check this, you can connect your laptop to the AC power supply from a different outlet, preferably from a different premises such as your office or a friend's home. If there is a grounding issue, your laptop won't make the static noise when connected to a power outlet at a different premises.

> Faulty Adapter - To check this, you can borrow an adapter from any of your friends for a while and check if the speakers are still making noise. (Note: Please check the power output of the other adapter that you wish to use for testing. Make sure that the power output of the borrowed adapter and the one you are currently using is same.)

Once the issue is diagnosed, take appropriate action to eliminate the problem.

Good Luck!!
 

viveknayyar007

Distinguished
Hello Silent Night

There can be a few reasons for this issue including:

> Improper Grounding > In case your place has improper grounding, the issue may occur. To check this, you can connect your laptop to the AC power supply from a different outlet, preferably from a different premises such as your office or a friend's home. If there is a grounding issue, your laptop won't make the static noise when connected to a power outlet at a different premises.

> Faulty Adapter - To check this, you can borrow an adapter from any of your friends for a while and check if the speakers are still making noise. (Note: Please check the power output of the other adapter that you wish to use for testing. Make sure that the power output of the borrowed adapter and the one you are currently using is same.)

Once the issue is diagnosed, take appropriate action to eliminate the problem.

Good Luck!!
 
The adapter you listed does not look like the OEM one. Your safest bet is always the original brick; those aftermarket ones are often made of cheap parts.

Bonus Answer:
Systems with discrete GPUs such as yours often cannot draw enough power from the battery - this goes for Optimus/Enduro systems with a high-end CPU also (you can see the CPU throttle using software utilities that monitor the clocks and utilization).
 
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