If you wonder how those Best Buy guys made those laptops/desktops to not let the customers change the display settings, here is how.

Step-1:

Open Notepad.

Step-2:

Copy and paste the following text to the Notepad.

Windows Registry Editor Version 5.00

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System]
"NoDispSettingsPage"=dword:00000001

Step-3:

Save the document somewhere on your desktop as, for example, NoDispSettingsPage.reg. Make sure to give the file a .REG extension.

Step-4:

Right click on the filename and either click on the “Merge” option or the “Open With…” option and then choose “Registry Editor” from the list.

Step-5:

Windows might prompt you with the UAC acknowledgement window. Click on the “Continue” button.

Now when you right click on your desktop to change the display settings you won’t be able to do it.

To get the ability to change the display settings back again, follow these steps.

Step-1:

Open Notepad.

Step-2:

Copy and paste the following text to the Notepad.

Windows Registry Editor Version 5.00

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System]
"NoDispSettingsPage"=dword:00000000

Step-3:

Save the document somewhere on your desktop as, for example, AllowDispSettingsPage.reg. Make sure to give the file a .REG extension.

Step-4:

Right click on the filename and either click on the “Merge” option or the “Open With…” option and then choose “Registry Editor” from the list.

Step-5:

Windows might prompt you with the UAC acknowledgement window. Click on the “Continue” button.