How to Fix an Audio Interface That’s Not Working

If your audio interface not working is ruining your session, start with the basics: check the cable and power, select the interface as your computer’s and DAW’s audio device, install the latest driver, and set a sensible buffer size. Most problems are configuration or connection issues, not faulty hardware. Work through the steps below in order.

Step 1: Check the physical connection

Begin with the obvious, because it is usually the culprit.

• Reseat the USB-C or Thunderbolt cable at both ends, and try a different known-good cable. Many cables are charge-only and carry no data.
• Plug directly into the computer, not through an unpowered hub, which may not supply enough power.
• Confirm the interface’s power light is on. Bus-powered units need a port that supplies adequate power.
• Try a different port on your computer.

Step 2: Select the interface as your audio device

Your computer and your DAW each have their own sound settings, and both must point at the interface.

• Windows: Set the interface as the default playback and recording device in Sound settings.
• macOS: Choose the interface for input and output in System Settings > Sound, or in Audio MIDI Setup.
• In your DAW: Open audio/device preferences and select the interface (on Windows, choose its ASIO driver). If the interface is “not working” only inside your DAW, this is the most common cause.

If you are still setting things up for the first time, our guide on how to set up an audio interface covers this in full.

Step 3: Install or reinstall the driver

Outdated or missing drivers cause most “device not recognised” problems, especially on Windows.

• Download the latest driver from the manufacturer’s site for your exact model and operating system.
• On Windows, install the brand’s ASIO driver; on macOS, many interfaces are class-compliant but still benefit from the official driver/firmware.
• Restart after installing, and update firmware if the manufacturer’s tool prompts you.
• If it once worked and now does not after an OS update, check for a newer driver, as compatibility often lags behind major OS releases.

Step 4: Fix “no input” or “no sound” issues

If the interface is recognised but you get no signal, check these.

• No mic signal: Turn up the input gain, confirm the cable is in the right input, and enable phantom power if you are using a condenser (see what is phantom power).
• Low or noisy signal: Revisit your gain staging; too little gain leaves you in the noise floor.
• No playback: Raise the monitor/headphone level, and check the direct-monitor vs DAW-monitor balance knob if your interface has one.
• Track not recording: Arm the track, select the correct input on it, and check the input is not muted.

Step 5: Tackle dropouts, glitches and latency

Crackles, pops and stutters usually mean the buffer is too small or the system is overloaded.

• Raise the buffer size in your DAW’s audio settings to stop glitching (lower it again only when tracking, to reduce latency).
• Close other apps and disable wireless adapters or power-saving modes that interrupt the audio stream.
• Make sure the sample rate matches between your interface, computer and project; a mismatch causes clicks. See sample rate and bit depth explained.

Step 6: Isolate hardware vs software

If nothing above works, narrow down the cause:

• Try the interface on a different computer. If it works there, the issue is software/driver on your main machine.
• Test with a different DAW or your OS sound recorder to rule out a single app’s settings.
• Power-cycle: unplug the interface, restart the computer, then reconnect.
• If it fails on every computer with good cables, the unit may be faulty, contact the manufacturer.

Frequently asked questions

Why is my audio interface not recognised by my computer?

Usually a cable, port or driver issue. Try a known-good data cable plugged directly into the computer, then install the latest driver for your exact model and operating system and restart.

My interface works but there’s no microphone sound, what’s wrong?

Check that input gain is up, the mic is in the correct input, and phantom power is on if you use a condenser. Then confirm your DAW track is armed and set to the right input.

How do I stop crackling and dropouts?

Increase the buffer size in your DAW, match the sample rate across your project and interface, and close background apps. Crackles almost always point to buffer or system-load problems rather than a broken interface.