How to resolve Windows issues with an in-place upgrade install

Is your Windows computer acting sluggish, displaying strange errors, or refusing to cooperate? Before resorting to a full reinstall, try installing a Windows in-place upgrade. This simple process can fix many common issues without wiping your data.
What is a Windows in-place upgrade install?
A Windows in-place upgrade refreshes your operating system without deleting your personal files, settings, or installed applications.