Windows Registryis a huge database that stores information about computer firmware, software, controls, and installed applications.
Therefore, you should understand that editing registry keys should be careful.
To avoid irrecoverable damage to your rig, youd better back up registry keys before you change them.

The following content will show you how to fix unable to delete all specified values error.
Firstly, you might venture to run Windows Registry as administrator to give it more permissions to modify subkeys.
Then, it’s possible for you to give a shot to delete the key.
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Step 3: SelectPermissionsfrom the context menu.
Step 4: choose theAdvancedbutton at the bottom of thePermissions for Accountswindow.
Step 5: ClickChangenext to the Owner name.

Afterward, venture to delete the key again to see if you get rid of the fault signal successfully.
Do you know how to pull up the user folder on an old hard drive?
This post shows you detailed steps to initiate the folder.

Step 1: Download this tool fromthe Microsoft page.
Step 2: Extract the files and double-grab the main exe file to run it.
Step 3: Typeregdelnull -sand hitEnter.

You should replacewith the path of the registry key you want to delete.
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