Terrible playback quality

Hey everyone. I use this program to record quick song ideas with my acoustic guitar just using the built in computer mic. I purchased a new computer and installed Audacity and started recording only to listen back and hear the audio was terrible. It flows in and out and I can’t figure out why. I’ve never had this problem before using much less capable computers. I attached a clip. Can anyone explain what is going on here? Thanks a bunch

I can’t listen to your file right now, but make sure [u]Windows “Enhancements”[/u] are turned OFF.

Thank you, it seems to fixed by going into my microphone properties and disabling all sound effects. Thank you!