Googled on 'ms money beep' and found lots of folk with same problem, for example this one, with an answer that worked:
How to stop loud beep
Right-click the Sound icon in the notification area, and choose Playback
Devices. Double-click Speakers, and on the Speakers Properties window,
choose the Levels tab. If it's truly a PC Beep, you can turn down the
volume there (Apply, OK). I wouldn't mute it, just in case you have a
system event that may need your attention.
You can test the volume level by opening Command Prompt. Hold down CTRL,
and then press G on your keyboard. Press Enter.
Hope this is helpful.