I use my mobo's onboard sound & it's worked just fine for over a year. Lately, for no reason that I can pin-point, Windows just changes from my normal Speakers Audio Device to Digital Audio (S/PDIF) & I cannot hear anything/change it back; the only way to get back to it's regular setting is to restart the comfuser.
Anyone have any idea as to why this may be happening?
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My Computer
Computer type
PC/Desktop
Computer Manufacturer/Model Number
Self built comfuser
OS
10 Pro. 64Bit
CPU
AMD FX 4100, 4-Core Black Edition. Socket AM3+ ~ 3.60GHz
Motherboard
ASUS M5A97 LE R2.0
Memory
2x 4GB Kingston HyperX DDR3-1866 (PC3-14900) - 8GB Total
Graphics Card(s)
ASUS Radeon HD 6670-2GD3
Sound Card
Onboard High Definition Audio Device
Monitor(s) Displays
HP 2009m LCD
Screen Resolution
1600x900, True Color (32bit), 60Hertz
Hard Drives
WD Blue - 1TB, 3D NAND - SATA SSD
PSU
XFX Pro 450W Core Edition - Fully Wired
Case
Antec Super Lanboy
Cooling
Stock CPU fan + 2 (1 front, 1 back) 120mm Antec fans
Keyboard
Logitech MK700/MK710
Mouse
Logitech M705
Internet Speed
Frontier FiOS 50/50
Antivirus
Windows Security
Browser
Vivaldi
Other Info
1x ASUS DRW-24B1ST Multi-DVD Rewriter
1x RocketFish AIO Media Card Reader
1x WD 1TB Passport USB External Drive
It apparently senses that the speakers are not plugged in, according to your display and then defaults to the S/PDIF output.
I notice it says "High Definition Audio Device" which usually means the generic Windows installed sound driver rather than the specific sound driver for whatever sound device you have. If this is the case, install the sound driver from the motherboard vendor's site, as that will be the correct driver. We see a lot of sound problems on the Dell users forum where the generic Windows installed HD Codec audio driver has been installed instead of the correct Dell supplied sound driver - either does not work or does not work correctly.
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
