Since I upgrade to Windows 10 (coming from 8.1) in my friend's Dell Optiplex 3011 All-In-One computer, with built-in speakers, the audio has been disabled, and I see the Windows speaker icon is with an 'x'. In Windows 8.1, the audio was working normally, so it's not a hardware issue. However, if I plug in an earphone, the audio output is enabled and the Windows speaker icon changes to normal one. I installed the latest version of Realtek HD Audio driver (R2.79), and restarted, but the audio continues disabled unless an earphone is connected. I first upgraded to Windows 10 and installed the Realtek audio drivers. Then, I performed did a clean install and installed the Realtek audio driver again, but audio is still disabled.
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When I open the Realtek Audio Manager in Control Panel, only the microphone tab appears. When I plug an earphone, the speaker/earphone tab is visible as it should be, disappearing after I unplug it. I reinstalled Windows 8.1 in his system hoping to have audio working again, but the problem persists. Amd Radeon Hd 5800 Series Driver Windows 10. I've tried installing the Realtek HD Audio driver from Dell supporte page for my product (entering the service tag to be 100% sure), but no luck. Windows troubleshooting is useless as usual, not giving any help, only asking me to plug in an earphone, like I didn't know it.
I even upgraded Dell BIOS/UEFI firmware to latest version (A07), but it didn't fix anything. Does anyone know how to solve this problem? Thanks in advance. Info: System: Dell Optiplex 3011 All-in-One OS: Windows 10 Home Single Language Realtek version: R.279. Computer Type: PC/Desktop System Manufacturer/Model Number: Self Build OS: Windows 10 Pro x64 CPU: i7 4790K Motherboard: GA-Z97X Gaming G1 Wifi-BK Memory: Kingston HyperX1 Savage 2x8GB (16GB) 2400 Graphics Card: 2 x Gigabyte GTX 970 Gaming G1 Sound Card: Sound Blaster Recon3Di (onboard) Monitor(s) Displays: Dell U2713HM Screen Resolution: 2560 x 1440 Keyboard: Logitech K330 Mouse: Logitech M215 PSU: EVGA Supernova 1200P2 Case: Phanteks Enthoo Primo Cooling: Custom H2O Hard Drives: Samsung EVO SSD & WD Black Internet Speed: 36 Mbps down / 9 Mbps up Browser: Whatever Antivirus: Eset NOD32.