How to Restore your Windows 10 Registry if you forgot to manually back it up.
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If at some stage you have ventured into your Windows 10 registry to make some changes and somehow got lost, causing a gigantic mess and your computer won't boot properly. Don’t stress, we have a solution that should have you back up in running quickly, by restoring your Windows 10 registry from it’s not so widely known backup.
Generally speaking, most Windows users would rarely find themselves venturing into the world that is the Registry. However, on the odd occasion you might need to fix or change something and in those cases the Registry is unavoidable. If for some reason you have caused an error in your registry or would just like to revert back to a less recent version. Even if you haven’t made a manual backup of the Registry.
Using Windows 10’s Automatic Backup to restore your Windows 10 Registry.
As great as it is to know that Windows has your back providing a backup, it’s still very much advised to create your own manual System Registry restore points as sometimes automatic processes fail or are relatively out of date.
Note: As with all things Registry related make sure that you have a full system backup of your important information in case something goes wrong. This method is advised as a last ditch chance to save your system from a full reinstall.
In order to start the process you will need to start your computer using the “Windows Startup Settings” / “Advanced Startup Options” previously know as “Advanced Boot Options” Here are a few different way to do so:
How to find the Advanced startup options on Windows 10
Once you have done this click on “Troubleshoot” then “Advanced Options” followed by “Command Prompt” Once you have the “cmd” window open in front of you, you will need to change the Drive letter to the location that Windows is installed. When your device starts in Command Prompt, it will start on:
You will need to change the drive letter where Windows is installed. Although Windows is installed on C:\ (by default) when you boot your computer in recovery mode, the drive letter changes to another letter. This letter is generally D:\
To check it if is the correct drive simply enter
If the Windows folder displays at the bottom of the list you are in the right place. If not you will have to change the Drive letter to something else. In order to do this simply enter.
Or whatever the letter you wish to try is. Then check again using the “dir” command. You may have to do this a few times in order to get the correct letter.
Once you have the Windows folder showing you can proceed with the next step. You will now need to enter the System32 folder, to do this type the following command.
Note: Don’t forget to change the drive letter of the above command to the one that corresponds with your device.
Next, we will enter the following command which will create a folder to temporary backup files, this is where a copy of the Registry will be stored.
The next command will enter the "RegBack" folder where the data we are looking for is stored.
Don’t worry we are just about done there are only a few more steps to follow to complete the process. To verify the above folders contents enter:
The next part is very important to take note of, when “dir” completes the size of the files listed “SYSTEM, SOFTWARE, SAM, SECURITY, DEFAULT” should be around the same size as the ones shown in the picture. If they either show 0 or are a lot higher it is pointless to continue the as a registry repair will not be possible. You may need to consider using a “System Restore Point” or performing a fresh install of Windows.
If everything looks ok though you can continue to the next step, which is to enter
Once you have entered this confirm all of the questions with “Y” and “Enter” With all of the questions confirmed with a Yes you can close Command Prompt as the task is completed.
If you followed all the steps correctly your Windows 10 Registry should now be restored to a previously working state.