No audio via HDMI ("Not Plugged In" error)

abeln2672

New member
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2:24 AM
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1
Just built my first PC and pretty proud of myself, other than the fact I can't get sound via HDMI.

Intel G3258
Gigabyte GA-B85M-DS3H rev 3.0 MOBO
Radeon HD5450 GPU
Upstar M240a1 monitor (built in speakers)
Windows 7 Home Premium x64 (all updates installed)

Video has always worked fine via HDMI -- but never audio. I've tried both an LCD TV and monitor, and I've used both the onboard HDMI port and a brand new GPU I just installed to see if it would correct the problem. No matter what I do, I see the "Not Plugged In" message under my HDMI Output (currently, "AMD HDMI Output"), so I can't select it as the default device. I've tried a million fixes, and have uninstalled/reinstalled countless drivers from Intel (onboard graphics, which includes audio), Realtek, and AMD. I'm about to rip my hair out on this one! Any help appreciated!!!
 

My Computer My Computer

Computer type
PC/Desktop
OS
Windows 7 Home Premium x64
Have you tried a different HDMI cable?
 

My Computer My Computer

Computer type
PC/Desktop
Computer Manufacturer/Model Number
My Own Build
OS
Windows 10 64 bit
CPU
Intel i7 6700K
Motherboard
ASUS ROG Maximus VIII Hero
Memory
16GB Corsair Dominator
Graphics Card(s)
Intel CPU Graphics
Sound Card
RealTek
Monitor(s) Displays
27" Dell S2719dgf
Screen Resolution
2560X1440
Hard Drives
1 TB Samsung 850 EVO SSD for Win 10 Pro
500GB Samsung 850 EVO SSD for Win 10 Insider
2 TB drive for backup
PSU
EVGA Supernova 750G2
Case
BeQuiet Silent Base 600
Cooling
Deepcool Captain 120EX
Keyboard
Microsoft Wireless 2000
Mouse
Microsoft wireless
Internet Speed
100 MB/sec (Cable)
Antivirus
Microsoft Defender and Malwarebytes
Browser
Edge/Firefox
Other Info
Cakewalk (Sonar) by BandLab and Studio One 4.1 Pro recording studio software. MOTU 896Mk3 Hybrid recording interface, Frontier Tranzport wireless control unit, Behringer X-Touch Control Surface.
Five USB connected optical drives for CD Audio production using Nero BurningROM
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