In Windows you can change desktop wallpaper, screen saver, themes and other appearance settings by right-click on Desktop and select "Properties".
Sometimes you might want to disable all or a few options in Desktop Properties to restrict users or you might want to enable those options in case they are disabled by your system administrator or a virus infection.
Following tutorial will help you in enabling or disabling all or a particular option in Desktop Properties:
NOTE: This tutorial will work for almost all Windows versions.
A. Disable Themes Tab in Desktop Properties:
Type regedit in RUN dialog box and press Enter. Now go to:
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\ Explorer
If "Explorer" key is not present, then create it. Now in right-side pane, create a new DWORD value NoThemesTab and set its value to 1 to disable it.

B. Disable Desktop Tab in Desktop Properties:
Type regedit in RUN dialog box and press Enter. Now go to:
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\ System
If "System" key is not present, then create it. Now in right-side pane, create a new DWORD value NoDispBackgroundPage and set its value to 1 to disable it.

C. Disable Screen Saver Tab in Desktop Properties:
Type regedit in RUN dialog box and press Enter. Now go to:
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\ System
If "System" key is not present, then create it. Now in right-side pane, create a new DWORD value NoDispScrSavPage and set its value to 1 to disable it.

D. Disable both Themes and Appearance Tabs in Desktop Properties:
Type regedit in RUN dialog box and press Enter. Now go to:
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\ System
If "System" key is not present, then create it. Now in right-side pane, create a new DWORD value NoDispAppearancePage and set its value to 1 to disable it.

E. Disable Settings Tab in Desktop Properties:
Type regedit in RUN dialog box and press Enter. Now go to:
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\ System
If "System" key is not present, then create it. Now in right-side pane, create a new DWORD value NoDispSettingsPage and set its value to 1 to disable it.

BONUS TIP: In case you want to enable a restricted tab in Desktop Properties, just delete the required DWORD value as mentioned above or change its value to 0 instead of 1.
Posted by: Vishal Gupta | Categories: Troubleshooting, Windows 7, Windows Vista, Windows XP
Leanda
For such a long time I have been trying to figure out how to enable Themes which had been disabled... months and months!! In less than 1 minute you have helped me to fix this!!! THANK YOU!!!!
sankar
how to enable if its disabled
VG
^^ Either remove the DWORD values or change their values to 0
Dee
Dear Vishal,
love your tips, do you have a simple way to simply stop Users from saving files (shortcuts etc) to their desktop?
Thank you
Dee
VG
^^ I hardly think its possible. Desktop is essential place for users and if we restrict it, it might create new unwanted problems.
Disha
i want to know how do i will block the entry of usb (old as well as new).