> Disconnect the AudioBox from your computer.
> Hit the Windows Key
> Now type “View advanced system settings” and press return
> Click Environment Variables button.
> Click the New button for the top section on this window.
> For "Variable Name:" type this exactly.
> For "Variable Value:" enter a single number " 1 ".
> Click OK and couple times and then open the Device Manger.
> Click the View menu and check "Show Hidden Devices".
> Right click and Uninstall any "AudioBox", "PreSonus", "USB Audio Device" and or "Unknown Device" you see listed under any category.
> Restart your computer.
> Install the current device drivers.
If you still have trouble, test with a new and or different USB cable.
Test your AudioBox on another computer to determine if it has the same problem. If so, then your AudioBox may be faulty.
Contact PreSonus Support for further assistance.