Manually setting sample rate for your audio interface can help too. Try this:

Right click on the Windows Start menu and choose Settings, then click on System followed by Sound. Scroll to the bottom and choose Sound Control Panel. If Sound Control Panel is not at the bottom, it may be on the right side.

Under the Playback tab, choose your default audio device (with the Green checkmark), then click on Properties. Go to the Advanced tab and choose 16-bit 44100 Hz (CD Quality) and click OK. If there is only the option of 24-bit 44100 Hz (Studio Quality), choose that instead. While we're here, uncheck the option to "Allow applications to take exclusive control of this device".

Next, do the same on the Recording tab with the device that has the Green checkbox. Click Properties, go to the Advanced tab, and choose 16-bit 44100 Hz (CD Quality) and click OK. If there is only the option of 24-bit 44100 Hz (Studio Quality), choose that instead. While we're here, uncheck the option to "Allow applications to take exclusive control of this device".

Once that is done, click OK on the Sound window, then go back to Band-in-a-Box/RealBand/PowerTracks and make sure it is working.

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