Before installing something new
New software and driver installations occasionally cause instability or unexpected conflicts that are hard to undo cleanly by hand. Creating a restore point first turns that risk into a non-issue -- if anything goes wrong, restoring to the saved point undoes the system-level changes and gets you back to a known-good state.
System Restore is not the same as a file backup
It is easy to assume a restore point protects everything on the computer, but it specifically targets system files, settings, and installed programs -- it does not back up personal documents, photos, or other files. For those, a separate backup solution is still necessary; System Restore and file backup solve two different problems and neither substitutes for the other.
Frequently Asked Questions
Does creating a restore point also back up my files?
No -- a restore point mainly saves system settings and program files; it does not back up personal documents or photos. Use a separate backup feature for those.
Are restore points ever created automatically?
Yes, Windows often creates them automatically before updates or new software installations, but creating one manually before important changes is still the safer habit.