To summarise, the procedure which got this working on my MSI B550M Mortar motherboard with Realtek ALC1200 codec on Windows 7 was: 1. Firstly, be aware that I tried about 20 different Realtek HD audio driver packages including R267, R270, R280, R281, R282, and none of these worked.
Motherboard Failure: Diagnosis and Solutions. Repair of electronic components. If your computer suddenly (or not so suddenly) stops working, itβs possible the issue is the motherboard
Make sure to download the AMD chipset drivers for your motherboard, then download and install the Realtek audio drivers. Even without any speakers connected you should be able to switch from Stereo, 5.1 Surround & 7.1 Surround. Click to expand That did it! Thank you.
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msi motherboard audio not working