Open Device Manager (Right-click Start button > Device Manager). Step 2: Expand "Sound, video and game controllers" . Step 3: Look for "Castle 3 HD Video" or "Candid HD Capture." Right-click it > Properties . Step 4: Go to the Driver tab. Click Roll Back Driver (if available). If not, click Uninstall Device . Check the box: "Delete the driver software for this device." Step 5: Disconnect the Castle 3 device. Reboot your PC. Step 6: Download the legacy driver package v.2.1.8 (not the latest v.3.0) from the manufacturer’s archive. Install it manually (Run as Administrator). Step 7: Before reconnecting, open OBS / XSplit / Your Recording App as Administrator.
Go to your display settings and set your monitor scaling to 100% before launching. Alternatively, navigate to the game’s configuration file (usually config.ini or settings.txt in the installation folder) and manually set the Width and Height to match your native resolution. 3. Missing DLL or Runtime Errors candid+hd+castle+3+fix