Windows 10 comes with the very handy System Restore application, however it is not as easily accessible as it was in previous versions, nor is it always enabled by default (perhaps to save storage space on some installations). System Restore allows you to roll back settings and undo changes (for example, an application install) without requiring lots of manual action. The restore points that allow you to do this are often generated when making changes to your OS, so there should be several restore points to choose from at any time.
There are two methods of accessing system restore - either within Windows or from the Advanced Startup options screen. To use system restore from the advanced startup screen, follow the Advanced Startup Options tutorial and then select Troubleshoot > Advanced Options > System Restore.
To access system restore within Windows, click the Start Menu or Search Icon and type "Control Panel", then click the entry that appears:
Now click System and Security from within the Control Panel:
Then click System from the list:
Then click System Protection from the left column:
Now click System Restore within this window:
You will then be presented with the system restore wizard, which will allow you to choose which restore point to use. If the first restore point doesn't work, you can always undo your changes or choose another: