What is Last Known Good Configuration?
As stated in the Microsoft Website:
“It’s a Windows startup option that uses the most recent system settings that worked correctly. Every time you turn your computer off and Windows shuts down successfully, important system settings are saved in the registry. You can use those settings to start your computer if a problem occurs”.
You can use this option only if your computer has started and successfully the previous time. The reason is that, when you shut down your computer, important system settings are stored in the System Registry. If you have not shut down your computer properly or your computer did not turn ON successfully, then these settings are not saved in the registry.
Another good thing about this option is, all your files stored in your computer like photos, videos, e-mails etc are not affected as only system settings are being restored.
Steps to Start your Computer in Last Known Good Configuration Mode
1. Switch ON your computer or restart your computer if it’s already switched ON.
2. As your computer starts, press F8 several times before the windows screen shows. This will take you to the Windows Advanced Options Menu.
3. Use the arrow keys to highlight the appropriate Last Known Good Configuration option, and then press Enter.
4. Your computer will start in Last Known Good Configuration, given that your last logon is successful.
How do we know that we started in Last Known Good Configuration?
You may not notice any change as this mode also looks similar to Normal Mode. But it would have started windows using the Last good Configuration in which your computer started.
How to come out of Last Known Good Configuration?
This mode works as a Normal mode and all the functionalities of windows will be available when starting with this mode. So there is no need to start again in normal mode.