When a CMI8738-based card is installed in a Windows 11 machine, Device Manager will show:
Users can disable driver signature enforcement by booting Windows into “Test Mode” or using advanced startup options. One can then manually install the last Windows 7 32-bit driver using compatibility settings. However, this disables significant security features, leaving the system vulnerable to rootkits, and requires re-running the disabling process after every major Windows update. For most users, this is an unstable, temporary fix that often breaks after patch Tuesday updates. Cmi8738 Driver Windows 11 64 Bit
Inside the C-Media control panel:
: Windows will warn you about compatibility. Since you're using a 64-bit driver on a 64-bit system, it is generally safe to proceed. Key Features & Limitations Once installed, the When a CMI8738-based card is installed in a
2-channel stereo output only, occasional system freezes when changing audio sample rate. For most users, this is an unstable, temporary
| Issue | Fix | |-------|-----| | No sound after install | Set as default device: Right-click speaker icon → Sounds → Playback → Right-click CMI8738 → Set as Default | | Crackling/popping | In driver properties → Advanced → Set default format to | | Driver reverts after reboot | Use Group Policy or Windows Update Show/Hide tool to block automatic driver updates | | Still not working | Card may be too old for modern PCI slot (PCI vs PCIe). Use a PCIe to PCI bridge card or external USB sound card instead |