My computer is making buzzing noises when I scroll.

it sounds like it could be electrical or hardware related you might want to turn off the computer and check to make sure all your plugs and electrical connections are seated tight and that nothing has come lose 

 

you could also try unplugging the mouse and try using a different one and see if it still makes the noise or not

 

 

My M.2 drives make noise that sounds like a hard drive - much quieter, but noise nonetheless. My wife can't hear it at all, but I've got that superman hearing that keeps me up at night if there's a fruit fly farting downstairs.

sounds like a bit of good old fashioned coil whine. I wouldn't worry about it. 

 

edit: If its super annoying you could try and find the coil that's whining and put a drop of glue on it to see if that stops it. Most likely one on your video card.

Edited July 24 by unabletoconnect

AMD FidelityFX™ Super Resolution 3 transforms gaming experiences with massive and responsive frame rates in supported games using super resolution temporal upscaling and advanced frame generation.

 

Sounds like something that could promote coil whine, if your GPU is susceptible to it, under load.

My GPU also gets coil whine especially when doing heavy operations (transcoding 4K etc.) or being stressed.