Cause: You downloaded a 32-bit driver for a 64-bit OS, or vice versa. Fix: Uninstall entirely. Go to Grass Valley’s site and manually select "Windows 10 64-bit" or "Windows 11 64-bit."
| Likely cause | Fix | |--------------|------| | Windows default playback device not set | Right-click speaker tray → Sounds → Playback tab → set GV device as Default | | Device in “Digital Output” mode | Disable unused outputs in Sound Control Panel | | App using wrong audio endpoint | Check app audio settings (OBS, Zoom, Discord) | gv audio driver
Cause: Windows Update automatically overwrites the proprietary GV driver. Cause: You downloaded a 32-bit driver for a
Fix:
Without this driver, your expensive SDI capture card or I/O device is essentially a brick. Once your GV audio driver is installed, you
Once your GV audio driver is installed, you need to tune Windows to prevent glitches during recording.