in the HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System
registry mentioned by deathclaw.. delete the wallpaper value..
Type: Posts; User: ak_47; Keyword(s):
in the HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System
registry mentioned by deathclaw.. delete the wallpaper value..
just delete the "wallpaper" key... i think you should be able to change wallpapers now..