The Last Known Good Configuration (LKGC) is a feature of the Microsoft Windows operating system that allows users to revert their computer’s state, including system files, registry, and installed programs, to a previous state without affecting user data.
This is useful when the computer begins to malfunction due to any reason, such as a recent installation or a bad software update, that changed the system configuration or registry.
When the computer is started, the LKGC feature will check for any changes made since the computer was last shutdown. If it finds a change that may have caused a malfunction, it rolls back the computer’s state to the previous one.
It effectively restores the computer to its last known good configuration.
The Last Known Good Configuration feature is used to help diagnose and fix various problems associated with Windows-based PCs. It can help with blue screen errors, problems with starting up the computer, or any other kind of problem that may be caused by a recent installation or update.
When the problem is fixed and the computer is working properly, the user can simply restart the computer, and the LKGC will no longer activate because the computer is back in its last known good configuration.
What does last known good mean?
Last known good is a term used in the Microsoft Windows operating system to refer to a computer state that the OS remembers from a previous successful boot. This state is stored in the registry. Whenever an unexpected problem or error occurs, Windows can be restored to its last known good condition by restarting the computer and loading the registry settings from the last successful boot.
This can help eliminate any conflicts or errors that may have arisen since that last successful boot. Last known good can also help restore a computer to its previous settings when a user has changed something that causes the system to malfunction.
All in all, it is a useful feature for restoring a system back to the state it was in prior to any unexpected problems or changes.
How do I install last known good configuration?
To install the Last Known Good Configuration, you first need to boot up your computer into the Windows Advanced Options Menu. To do this, restart your computer, and press F8 repeatedly until the Advanced Options menu appears.
Once you have the menu, use the arrow keys to select the “Last Known Good Configuration” option and press Enter. Your computer will then reboot, and once it starts up, it will have the Last Known Good Configuration installed.
If you have difficulty accessing the Advanced Options menu, or the Last Known Good Configuration option is not available, you may need to boot from your Windows installation disc or system repair disc.
To do this, restart your computer and press any key when prompted to start the setup. When asked which type of installation you wish to perform, select “Repair Your Computer” option. You will then be taken to the System Recovery Options menu, choose the “Load Drivers” option and select “Last Known Good Configuration”.
Confirm the repair and your system will reboot with the Last Known Good Configuration installed.
How do I get to advanced repair on Windows 10?
In order to access advanced repair options on Windows 10, you will need to access the Advanced Options menu. This can be done in a few different ways.
One way to reach the Advanced Options menu is to use the Windows 10 installation media. You will need to boot from the media, typically from a USB or an optical disc, and then you will be presented with a menu that includes a variety of “Repair your computer” options.
Select the “Troubleshoot” option and then you should be able to access the Advanced Options menu.
Another option is to use the Recovery Environment, which can be accessed by pressing the F11 key or the Shift + F8 shortcut combination when your computer starts. You should then be presented with the “Choose an option” screen, which includes a “Troubleshoot” option.
Select this option to open the Advanced Options menu.
Finally, you may also be able to access the Advanced Options menu by pressing the Windows key + X shortcut and then selecting the “Command Prompt (Admin)” option. You should then see a command prompt window.
Enter the “shutdown /r /o” command into the command line and press Enter. Your computer should then restart and present you with the “Choose an option” screen. Select the “Troubleshoot” option to open the Advanced Options menu.
Once you have reached the Advanced Options menu, you will be able to access a variety of tools and options that can help troubleshoot and repair your Windows 10 system. These include tools like System Restore and System Image Recovery, which can help you reset your system to a previous restore point, as well as Startup Repair, which can help you identify and fix common startup problems.
Why is F8 not working?
First, make sure that the power supply is connected properly, as this will prevent any key from functioning. Also verify that the cable is securely inserted and that the video output from the display device is connected to the correct port.
Additionally, check the Fn key on your keyboard. If it is enabled, press it in combination with F8 to activate the function. Furthermore, make sure that the drivers on your system are up-to-date and that the operating system is current.
If none of these steps resolves the issue, a hardware issue may be the cause. In this case, contact a qualified technician to diagnose the issue.
How do I enable F8?
In order to enable the F8 key on your keyboard, you will need to make sure that it is properly enabled in the BIOS settings. To do this, you should follow the instructions below.
Step 1: Press the appropriate key to enter the BIOS when you switch on your computer (typically the Del key or one of the F keys).
Step 2: Navigate to the Advanced/System Configuration tab in the BIOS.
Step 3: Find the ‘NumLock on Boot’ or ‘F8 Key Boot’ option and set it to ‘Enabled’.
Step 4: Save your changes and exit the BIOS.
Once you have enabled the F8 key in the BIOS, it should be active and you will be able to use it for various tasks (e.g., navigating the BIOS menu, advancing to Windows Safe Mode, etc.) as desired.
Why would you get last good known configuration screen?
The Last Known Good Configuration screen is a useful tool to have in your troubleshooting arsenal. It allows you to revert back to your previously successful system configuration, after your most recent changes have caused issues.
This screen is a lifesaver for IT technicians, as it allows us to quickly restore functionality to a system after seemingly intractable issues.
Furthermore, it can help to prevent data loss. Imagine you’ve just installed a complicated update, and it’s crashed your system. Without Last Known Good Configuration, you’d be forced to wipe the system and start again – often leading to data loss.
In summary, Last Known Good Configuration is a valuable tool to have in your IT toolkit. It can help IT technicians quickly restore malfunctioning systems, and prevents data loss in the process.
What is the F12 boot menu?
The F12 Boot Menu is a feature on many Dell computers that provides several boot options. It is designed to allow the user to select or modify the system’s boot options even if the operating system is not currently installed or working properly.
When the system is powered up, the user can press the F12 key to bring up the menu, which contains several options such as Boot From USB, Boot From Hard Drive, Boot From CD/DVD, boot into the Setup Utility, etc.
This menu gives the user more flexibility when booting from different media, or when troubleshooting different issues. Additionally, the menu can be used to create a permanent change to the boot sequence, for example selecting to always boot from a particular device first.
What does F9 do on startup?
The F9 key is used to access the System Recovery Options menu on most computers running a Windows operating system. This menu gives you access to troubleshooting and repair features that allow you to do things such as restore your computer to a previous working state or even a completely clean installation of Windows.
When you press the F9 key at startup, a window pops up with various options for restoring or recovering your computer. Depending on your computer’s configuration and the version of Windows you are running, your options may differ.
For example, if you are running Windows 8, you may have options like Refresh your PC, Reset your PC, or Boot to the Advanced Options Menu.
By using the F9 key on startup, you can access the System Recovery Options menu which can be used to perform a system restore, startup repair, create a Windows installation disc, and make backup copies of important files and data.
This is an especially useful tool if something goes wrong with your computer and you are unable to boot into Windows. It can also be used to recover lost or corrupted data and files.
Does F8 work on Windows 10?
Yes, F8 works on Windows 10. As a legacy key, F8 can be used to access a number of Windows functions. For instance, if you hold down F8 during the boot process, you can enter the Advanced Boot Options menu, which is a set of tools that can help troubleshoot and repair Windows problems.
Once inside, you can open the system restore, disable the automatic restart feature, and enter safe mode, among other tasks. Additionally, if you press F8 while the OS is running, you can access the WindowsStartup menu, which contains several diagnostic tools.
In conclusion, F8 can be a useful tool when booting Windows 10 or while the OS is running, so long as the options available in the menus are used appropriately.
How do I press F8 on my laptop?
The F8 key is generally used to enter the Windows boot menu, which allows you to select a specific boot device or access various startup options. Depending on your laptop, you may have to press a function (Fn) key along with the F8 key in order to access the boot menu.
To press the F8 key on a laptop, locate the “Function” or “Fn” key in the lower-left corner of your laptop’s keyboard—which key this is will vary depending on your make and model. Once you’ve located the Fn key, press and hold it while you press the F8 key.
Generally, you’ll want to press and hold both keys for a few seconds before releasing them. If your laptop boots to a boot menu, you have successfully pressed the F8 key. If nothing happens, you may need to check your laptop’s settings in order to enable the boot menu.
What are the settings in BIOS?
BIOS, or Basic Input/Output System, is the first software to run when you turn on a computer. It contains the computer’s firmware and configures the hardware before launching the operating system. The settings in BIOS are the parameters that govern how the hardware functions and how the operating system interacts with the hardware.
The settings in BIOS can be accessed and changed through the BIOS menu. The settings are divided into categories such as System Configuration, Boot Options, Advanced Options, and Security. Within each of these categories, you can adjust settings such as boot order, enabling virtualization, powering down certain hardware components, and activating security features like a password.
The settings in BIOS are important to pay attention to and maintain properly, as they can have a significant impact on the performance of both the hardware and the operating system. Additionally, whenever you attempt to install new hardware or a new operating system, you should ensure that the BIOS settings are configured correctly for optimal performance.
What should be the BIOS settings for Windows 10?
The BIOS settings for Windows 10 depend on the specific hardware and associated components you are running. However, there are certain settings that should be changed from their default settings in order to ensure optimal performance and stability.
The most important setting is the Boot order, which should be set to boot from the disk containing the Windows 10 installation (usually the C: drive or a USB). Any other boot devices should be disabled.
Additionally, the Memory Options should be set to utilize maximum available system memory.
For optimal hard drive performance, Advanced Chipset Settings, Advanced Power Options and Storage Configuration should also be configured. Advanced Chipset Settings should be set to enable SATA hot plug and enable PIO usage.
Advanced Power Options should be set to balance performance and total power usage. Storage Configuration should be set to enable UEFI boot mode and enable removable storage device boot.
Other settings such as Security, Video, and Peripheral Configuration should also be changed to match the hardware being used. It is best to consult the product documentation for the exact settings that should be configured for these options.
In short, the most important BIOS settings for Windows 10 are the Boot Order, Memory Options, Advanced Chipset Settings, Advanced Power Options, and Storage Configuration. However, it is important to review the product documentation for the exact settings for each of these options and any other settings that may need to be adjusted for your specific hardware configuration.