That sucks man...you will be missed greatly. That happened to me sort of in a way a while back but I was able to catch it before it got extreme. Started losing sound and other things and I got it checked out and it was because my mother board was burning out.
As for a new computer I'm not sure what you can't afford but my dad recently bought my mom this tiny tower it was roughly 200$ and has like 900gbs of space. Came with Windows 7 etc. You should look into those. I'm not sure what the draw backs are but I'm sure they're small.
Anyways will miss your bro. Was starting to like you </3 lmao