# Reinstalling Windows to Fix PC Problems I switched to a Mac almost five years ago and haven‘t had any OS problems since. Windows is much more unstable. **I found that it takes around 18 months for the OS to become so unstable that it takes more time to fix problems than to simply reinstall the OS.** Yes, that takes an evening (with all the dev tools I usually install), but solution steps are straightforward enough that I can watch a movie in parallel, the required time is constant and the results are predictable – problems always disappear, and performance is always improved. I can even argue it takes less time if I account for all the research you need to do to figure out how to solve a particular problem without a reinstall.