Well, windows is okay.
its strange its not showing your storage drives in listing if you have selected that.
What version of win 10 are you on?
right click start
choose run...
type
winver and press enter
current is 2004.
Do you have a 2nd drive in PC or just one? MIght be helpful to move the location of Documents or whatever is using 100gb of space to another drive so if you do need to copy contents of that folder, its not as big.
Website only used because they offer clear instructions -
https://www.dummies.com/computers/o...e-the-location-of-user-folders-in-windows-10/
note: always helps to make sure to make destination folder before starting and be sure the location is right before clicking move as if you make an entire drive a library, it can be messy to fix.
My user folder is only 17gb (and I am not sure what that is...)... getting new PC next week so I better see whats in there and copy it someone where else.