How do I fix my laptop audio when its making strange robotic noises?

My laptop audio is making robotic noises when i play a video. I fixed this before, i went to device manager and changed the settings to the device output device and it worked
BUT now it's having the same problem, i attempted to change this problem again through changing the settings and it didn't work this time. So how do I fix it now?
It even go to a point where the audio was lost when a computer update occurred and i fixed it through the device manager settings and by updating the audio driver.
So why is my laptop making robotic noises again when i listen to a video? It seems like the video or sound would slow down and screech a bit.
This is a new lenovo laptop, i bought it last November.