The System Restore tool in Windows is one of the more helpful utilities available to you and is usually a great first step when you're trying to fix a major problem in Windows.
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Since a majority of Windows problems involve issues with at least one of those aspects of your operating system, System Restore is a great tool to use early in the troubleshooting process. It also helps that it's really simple to do.
Follow these easy steps to return Windows to a previous, hopefully working, state using System Restore:
Time Required: Using the System Restore tool to undo/reverse changes in Windows usually takes anywhere from 10 to 30 minutes, at least in most cases.