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- HP Community
- Desktops
- Desktop Audio
- External Speaker Humming sound after PC shutdown

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04-05-2023 05:36 PM
I have the brand new HP Envy All-in-1 PC 34-c1000. Excellent PC with one serious problem - the 3.5mm audio output jack. Works fine with external powered speakers (I have tried several from Bose, Sonos, audioengine, Edifier Luna) until I shutdown the computer, then I hear a loud humming sound. The humming persists even with the PC unplugged from power. The sound stops only when I power the speaker off which is not an option. Tried several outlets and different outlet combinations, different 3.5mm cables to no avail. Interestingly, with same setup on a previous 2019 Mac Pro, no hiccups. Very very annoying. Does anyone have and solved the same problem? Tired of all the suggestions so I'd like to hear from someone who really knows. Just freaking angry paying over 3k for a PC and can get decent audio output.
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04-06-2023 10:59 AM
hi
so I know, it may have nothing to do, but it's worth checking, I've already encountered other similar problems
I don't have the exact model of your machine, but it seems that only one motherboard is possible
SO :
https://support.hp.com/ee-en/product/hp-envy-34-inch-all-in-one-desktop-pc-34-c1000/2101054301
Motherboard Specifications, Angel
HP ENVY All-in-One 34-c1999nz PC Product Specifications
it is mentioned, 1 Headphone/microphone combo port
so no other audio port it seems
it is likely that a "standard" connector whether it is a simple helmet, or speakers, will not be suitable, since it will require a connector for headphones, and microphone
see here
https://support.hp.com/ee-en/document/ish_4315149-4208232-16
Connectors on the computer marked with a headset-only icon support output sound only and work with either a standard three-pin headphone or a four-pin headphone for sound.
I'm not sure, but it may be possible to use an adapter to get the right plug!
Connectors on the computer marked with a headset-with-a-microphone icon
support sound and a microphone when used with a headset with a four-pin plug and a microphone.
was this reply helpful , or just say thank you ? Click on the yes button
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Windows 11 22h2 inside , user
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04-06-2023 10:59 AM
hi
so I know, it may have nothing to do, but it's worth checking, I've already encountered other similar problems
I don't have the exact model of your machine, but it seems that only one motherboard is possible
SO :
https://support.hp.com/ee-en/product/hp-envy-34-inch-all-in-one-desktop-pc-34-c1000/2101054301
Motherboard Specifications, Angel
HP ENVY All-in-One 34-c1999nz PC Product Specifications
it is mentioned, 1 Headphone/microphone combo port
so no other audio port it seems
it is likely that a "standard" connector whether it is a simple helmet, or speakers, will not be suitable, since it will require a connector for headphones, and microphone
see here
https://support.hp.com/ee-en/document/ish_4315149-4208232-16
Connectors on the computer marked with a headset-only icon support output sound only and work with either a standard three-pin headphone or a four-pin headphone for sound.
I'm not sure, but it may be possible to use an adapter to get the right plug!
Connectors on the computer marked with a headset-with-a-microphone icon
support sound and a microphone when used with a headset with a four-pin plug and a microphone.
was this reply helpful , or just say thank you ? Click on the yes button
Please remember to mark the answers this can help other users
Desktop-Knowledge-Base
Windows 11 22h2 inside , user
------------------------------------------------------------------------------------------------------------