Sentech’s older drivers are not always WHQL signed. On Windows 10/11: Restart → Shift + Restart → Troubleshoot → Advanced → Startup Settings → Disable driver signature enforcement.
Solving the Sentech USB Camera Driver Puzzle: Installation, Issues, and Best Practices sentech usb camera driver
Plug in your Sentech USB camera to a dedicated USB 3.0 port (blue plastic inside). Avoid hubs. Sentech’s older drivers are not always WHQL signed
Run Sentech_USB_Driver_Setup_x64.exe as Administrator. Choose “Complete” installation. sentech usb camera driver
Open Device Manager → Find any previous “Sentech” or “Unknown device” → Right-click → Uninstall device (check “Delete driver software”).