Sometimes, for several reasons, you may have to manipulate registry key.

There ise the most know way to do that through the “regedit” command, and.. there is the way using Powershell !

Registry items, key, value, etc. are managed in Powershell as a file.

 

1. Create a registry key

To create a new registry key, just use the “New-Item” command and specify the path using, for example, “HKLM” For HKey_Local_Machine

New-Item 'HKLM:\SYSTEM\CurrentControlSet\Control\Key-To-Create'

To add a new property, same way, the command is “New-ItemProperty”. You will need also to specify the property name (-name) the value (-value) and the property type (-PropertyType) as shown below :

New-ItemProperty 'HKLM:\SYSTEM\CurrentControlSet\Control\Key-To-Create' -name PropertyName -value 0 -PropertyType 'DWord'

Source and more informations :

https://technet.microsoft.com/fr-fr/library/hh849795.aspx

https://technet.microsoft.com/fr-fr/library/hh849801.aspx

2.Modify a registry key value

Commands “Set-Item” and “Set-ItemProperty” can be use both to create/modify a registry key/value :

Set-ItemProperty 'HKLM:\SYSTEM\CurrentControlSet\Control\Key-To-Create' -name PropertyName -value 1

Source and more informations :

https://technet.microsoft.com/fr-fr/library/hh849844(v=wps.620).aspx

 

3. Delete a registry key

To Delete/Remove a new registry key, just use the “Remove-Item” command and specify the path using, for example, “HKLM” For HKey_Local_Machine

Remove-Item 'HKLM:\SYSTEM\CurrentControlSet\Control\Key-To-Delete'

To remove a new property, same way, the command is “Remove-ItemProperty”. You will need also to specify the property name (-name) as below :

Remove-ItemProperty 'HKLM:\SYSTEM\CurrentControlSet\Control\Key-To-Delete' -name PropertyName

Source and more informations :

https://technet.microsoft.com/fr-fr/library/hh849765(v=wps.620).aspx

https://technet.microsoft.com/fr-fr/library/hh849770.aspx