Despite popular belief, installing an operating system can succeed without really needing computer knowledge. In any case, you are guided through the installation which makes it pretty easy in the end.
Careful, installing an operating system also means erasing everything on your computer and end with a fresh install, like a brand new PC. You will lose your documents if you reinstall without
backing up your PC.
This procedure can let you fix any
bug or recover from any kind of
virus!