Using Windows 10's Reliability Monitor To Track Down Potential Problems Windows includes a built-in tool that can help you spot correlations between recent changes and current system problems.

You can monitor changes to Registry by using command-line File Compare fc.exe tool or freeware like WhatChanged, RegShot, Sysinternals Process Monitor, etc.

You can track the changes that are being made to Files, Drives & Windows Registry using FRSSystemWatch. The tool monitors the changes made & also displays the full file paths for each as well.

You can use Track Changes in Word to record every edit made in a document, either by yourself or others.