When you use this feature, you lose all configuration changes that were made since you last successfully started your computer. Windows Vista does not update the LastKnownGood control set until you successfully start the operating system in normal mode and log on. When you are troubleshooting, it is recommended that you use Last Known Good Configuration before you try other startup options, such as safe mode.
However, if you decide to use safe mode first, logging on to the computer in safe mode does not update the LastKnownGood control set. Therefore, Last Known Good Configuration remains an option if you cannot resolve your problem by using safe mode. Remove all floppy disks, CDs, DVDs, and other bootable media from your computer and then restart your computer.
In most cases, your next option is to use System Restore. We have an article on how to use System Restore to undo system changes in Windows if you need help. However, if you were following a troubleshooting guide specific to the problem you're having, your best option is to go back to that troubleshooting and continue as directed. While there is a similar startup menu with troubleshooting tools, it doesn't include the option to use LKGC. What you can do instead in those newer Windows versions is boot into Safe Mode , which is a startup type that loads basic drivers and is often a first step in troubleshooting startup issues.
As of January , Microsoft is no longer supporting Windows 7. We recommend upgrading to Windows 10 or Windows 11 to continue receiving security updates and technical support. Actively scan device characteristics for identification. Use precise geolocation data. Select personalised content. Create a personalised content profile. Measure ad performance. Select basic ads.
Create a personalised ads profile. Select personalised ads. Apply market research to generate audience insights. Here I take the New Volume E as an example. You have two options: click Back up Now to start the backup process immediately or click Back up Later to delay the backup process. When the process is finished, you have backed up your system successfully with MiniTool ShadowMaker. MiniTool ShadowMaker is a user-friendly program that can help you back up the operating system with a few steps.
If your computer encounters some issues, you can try the last known good configuration to fix them. After fixing your issues, it is recommended you back up your system. If you have any problem when using MiniTool program, please feel free to contact us via the email [email protected] and we will reply to you as soon as possible.
Download Shadowmaker. Summary : If the configuration of the system's registry or driver creates a conflict that prevents the system from starting, Windows may encounter problems during startup. Clean Boot VS. How to Fix It Quickly can help you fix the issue. Tip: Only if you have created a restore point in advance, you can try this method.
Read More. Tip: 1. Please do not save a volume image file to the volume being backed up. The destination that is used to store the system must have enough storage space. Tip: In addition to the method mentioned above, here is another method to back up the system disk.
Any changes to these locations in the registry may cause the system to fail to start. Does the last known configuration delete files? The important system and registry are stored in last known good configuration every time you turn your computer off successfully.
Vlad Finochkin Pundit. Is System Restore Safe? System Restore does not affect your personal files like your photos, documents, email, etc. You can use System Restore without hesitation even if you've just imported a few dozen pictures to your computer—it doesn't "undo" the import.
Lovie Dragos Pundit. Does System Restore delete files? Even you have uploaded a few dozen pictures and documents, it will not undo the upload. Helia Bertge Pundit. What does MSConfig do? It can disable or re-enable software, device drivers or Windows services that run at startup, and it can change boot parameters. This makes MSConfig an extremely useful troubleshooting utility.
Gottfried Luqui Teacher. How do I press f8? Do one of the following:. If your computer has a single operating system installed, press and hold the F8 key as your computer restarts. If your computer has more than one operating system, use the arrow keys to highlight the operating system you want to start in safe mode, and then press F8. Lucidia Woodley Teacher. What does safe mode do? Safe mode is a diagnostic mode of a computer operating system OS.
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