What happens if you install a bad piece of software or a defective driver and your computer starts acting strangely or you can't even boot. You'll want to revert Windows 10 to the previous system restore point, which will turn back the clock on your drivers, programs and settings to a time when the system worked perfectly. However, Windows 10 comes with system protection disabled. If you want to protect yourself -- and you should -- set up restore points following the instructions below.

1. Search for "restore point" in the Windows search box.

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2. Launch "Create a restore point" from the results. You should see a list of available drives.

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3. Select the system drive and click Configure. The system drive is usually the C: drive and has the word "(System)" written after its volume name.

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4. Toggle Restore Settings to "Turn on system protection," set the maximum disk space usage by moving the slider and click Ok. We recommend leaving 2 or 3 percent for restore pints but you may be able to get away with the lowest (1 percent).

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5. Click Create so that you create an initial restore point right away.

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6. Name the initial restore point when prompted.

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7. Click Close when it is done.

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If you need to restore from one of these points, you can click the System Restore button on the System Protection tab. If you can't boot, you can hit F8 or Shift + F8 during boot to get to the emergency menu on some computers. On other PCs, if you can at least get to the log in screen, you can hold down Shift while you select Restart.

To recover from a critical failure, you can use programs to create system backups.
Such as:
Acronis True Image
Paragon Backup and Recovery