Definition of Hyper IgM Syndromes. Patients with HIGM syndrome have an inability to switch from the production of antibodies of the IgM type to antibodies of the IgG, IgA or IgE types. As a result, patients with this disease have decreased levels of IgG and IgA but normal or elevated levels of IgM in their blood.
Windows 7 themes files are saved in the following locations: C:\Users\yourusername\AppData\Local\Microsoft\Windows\Themes. C:\Windows\Resources\Themes. Note: I assume C: drive is the system drive where Windows 7 is installed. Please check if the themes can be found.
Windows XP (Reference): You can find the actual path in the registry key named Wallpaper at [HKEY_CURRENT_USER\Control Panel\Desktop]. Usually it's something like: C:\Documents and Settings\ [YOURUSERNAME] \Local Settings\Application Data\Microsoft\Wallpaper1.bmp. Windows 7 (Reference): C:\Windows\Web\Wallpaper (default themes).