- Connection and volume of hardware, terminals to connect, and whether they are firmly connected.
- Whether the GAIN and volume of connected devices (speakers, mixers, and audio interfaces) are appropriate.
- Whether the driver is downloaded, and the latest version of the driver that corresponds to your OS is downloaded and installed from the manufacturer's site.
- Check if your PC is set as the playback device in the audio device settings.
For Windows
"Start Menu" > "Control Panel" > "Sound and Audio Devices"
For MAC
"Apple button on the upper left" > "System Preferences" > "Sound" DAW audio device settings
- Whether your audio device/output channel are set as the DAW output/input device.
- Whether the input channel of the track you are recording is set to the channel of the interface the instrument or microphone is connected to.