Final answer:
The System Restore utility can reverse changes and restore a computer's system files and settings to a previous state without affecting personal files, which can fix problems caused by new software or settings changes.
Step-by-step explanation:
When you experience problems after installing a new program or changing system settings, the System Restore utility can help by reversing the changes and bringing your computer to a previous point in time. This utility is extremely useful for recovering from system malfunctions or other issues caused by software installations, driver updates, or configuration changes that don't go as planned. By selecting a restore point from before the problem occurred, System Restore can return system files, installed applications, Windows Registry, and system settings to their previous state without affecting personal files.