Years ago I did a BTECH course, So computers are pretty easy to fix when you know how. my problem these days are that I don't have the tools any more.
I had a shop in sheffield fixing broken electronics and did well, when I decided to sell up and move on to been a chef I sold everything.
My mate has a shop that I have to pop down to get things from such as the heat gun, thermal paste and what not.
One day I might by a better laptop but while I can keep this going I might as well keep it.