Do you have any local tech that can take a look at it? What windows are you running with what packs? When was the last time you backed it up and off loaded a bit of that HD?
Or, go to my computer and take a snap off it and we'll look at it.
You can buy a new computer and load it with whatever OS that you're using. You won't be using it at its fullest, but the Acer E15 is a great machine for 600 dollars and certainly no slouch! I bought one for Oscar early this year and he's thrilled!
https://www.amazon.com/Acer-Aspire-i5-8250U-GeForce-E5-576G-5762/dp/B075FLBJV7