Screen background flickering

�
1. The Screen background flickering.
�
2. When you right click on the "Desktop" and choose "Properties" you get a link to
�
��� "file://c:\windows\Screen.html" instead of the regular "Properties" window.
�
�

�
The computer may infected by Trojan horse.�

�
1. Use "Windows AntiSpyware" to remove Trojan horse.
�
2. Use System Restore to Undo Changes if Problems Occur
�
http://www.microsoft.com/windowsxp/using/helpandsupport/learnmore/systemrestore.mspx
�
3. a. Review the following registry keys and verity that the registry contain the correct settings.
�
Note: Not all the keys may appear due operating system and/or application commutability requirements.
�������� Its recommended to export the registry settings before making the changes,
�
�
REGEDIT4
�
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet
Explorer\Desktop\General]
"WallpaperFileTime"=-
"WallpaperLocalFileTime"=-
�
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Sy
stem]
"NoDispAppearancePage"=-
"Wallpaper"=-
"WallpaperStyle"=-
"NoDispBackgroundPage"=-
�
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Ex
plorer]
"NoActiveDesktopChanges"=-
"ForceActiveDesktopOn"=-
�
[HKEY_CURRENT_USER\Control Panel\Desktop]
"Wallpaper"=-
"WallpaperStyle"=-
�
[HKEY_CURRENT_USER\Control Panel\Colors]
"Background"="0 78 152"
�
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\E
xplorer\Run]
"notepad.exe"=-
"notepad2.exe"=-
"winlogon.exe"=-
"paint.exe"=-
�
[-HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\Currentversion\Explorer\
Browser Helper Objects\{FFFFFFFF-FFFF-FFFF-FFFF-FFFFFFFFFFFF}]
�
[-HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\Currentversion\Explorer\
Browser Helper Objects\{FFFFFFFF-FFFF-FFFF-FFFF-FFFFFFFFFFFA}]
�
[HKEY_LOCAL_MACHINE\Software\Microsoft\Internet Explorer\Search]
"SearchAssistant"="http://ie.search.msn.com/{SUB_RFC1766}/srchasst/srcha
sst.htm"
"CustomizeSearch"="http://ie.search.msn.com/{SUB_RFC1766}/srchasst/srchc
ust.htm"
"Default_Search_URL"="http://www.microsoft.com/isapi/redir.dll?prd=ie&ar
=iesearch"
�
[HKEY_LOCAL_MACHINE\Software\Microsoft\Internet Explorer\Main]
"Default_Search_URL"="http://www.microsoft.com/isapi/redir.dll?prd=ie&ar
=iesearch"
"Search
Page"=http://www.microsoft.com/isapi/redir.dll?prd=ie&ar=iesearch
�
[HKEY_USERS\.DEFAULT\Software\Microsoft\Internet Explorer\Main]
"Search
Page"="http://www.microsoft.com/isapi/redir.dll?prd=ie&ar=iesearch"
"Search Bar"="Search
Bar"=http://search.msn.com/intl/searchpane/en-au/prov2.htm
�
[HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\SearchUrl]
""=http://home.microsoft.com/access/autosearch.asp?p=%s
�
[HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\main]
"Search
Page"="http://www.microsoft.com/isapi/redir.dll?prd=ie&ar=iesearch"
"Search Bar"="http://search.msn.com/spbasic.htm"
"Use Custom Search URL"= dword:00000000
"Use Search Asst"=-
�
[-HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Ext\Stats\
{FFFFFFFF-FFFF-FFFF-FFFF-FFFFFFFFFFFF}]
�
[-HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Ext\Stats\
{FFFFFFFF-FFFF-FFFF-FFFF-FFFFFFFFFFFA}]
�
[-HKEY_CLASSES_ROOT\CLSID\{FFFFFFFF-FFFF-FFFF-FFFF-FFFFFFFFFFFF}]
�
[-HKEY_CLASSES_ROOT\CLSID\{FFFFFFFF-FFFF-FFFF-FFFF-FFFFFFFFFFFA}]
�
[-HKEY_CLASSES_ROOT\CLSID\{357A87ED-3E5D-437d-B334-DEB7EB4982A3}]
�
[-HKEY_CLASSES_ROOT\CLSID\VMHomepage]
�
[-HKEY_CLASSES_ROOT\CLSID\VMHomepage.1]
�
[-HKEY_CLASSES_ROOT\Interface\{1E1B2878-88FF-11D2-8D96-D7ACAC95951F}]
�
[-HKEY_CLASSES_ROOT\TypeLib\{1E1B286C-88FF-11D2-8D96-D7ACAC95951F}]
�
[-HKEY_CLASSES_ROOT\VMHomepage]
�
[-HKEY_CLASSES_ROOT\VMHomepage.1]
�
[-HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\
Browser Helper Objecta]
�
[-HKEY_LOCAL_MACHINE\SYSTEM\ControlSet003\Services\HTTP\Parameters\S]
�
[-HKEY_LOCAL_MACHINE\SYSTEM\ControlSet003\Services\HTTP\Parameters\S]
�
[-HKEY_LOCAL_MACHINE\SYSTEM\ControlSet003\Services\SharedAccess\Paramete
rs\r]
�
[-HKEY_CURRENT_USER\Software\Microsoft\Internet
Explorer\Desktop\Components\1]

�
�
�� b. Reboot the computer to apply the new settings.
�

�
Protecting against viruses and Trojan horses
�
http://www.microsoft.com/resources/documentation/windows/xp/all/proddocs/en-us/protect_ff_c_virusw.mspx
�
Description of the Microsoft Windows registry
�
http://support.microsoft.com/default.aspx?scid=kb;EN-US;256986
�
How to back up, edit, and restore the registry in Windows XP and Windows Server 2003
�
http://support.microsoft.com/default.aspx?scid=kb;EN-US;322756
�
�

Microsoft corporation and/or its respective suppliers make no representations about the suitability, reliability, or accuracy of the information and related graphics contained herein. All such information and related graphics are provided "as is" without warranty of any kind. Microsoft and/or its respective suppliers hereby disclaim all warranties and conditions with regard to this information and related graphics, including all implied warranties and conditions of merchantability, fitness for a particular purpose, workmanlike effort, title and non-infringement. You specifically agree that in no event shall Microsoft and/or its suppliers be liable for any direct, indirect, punitive, incidental, special, consequential damages or any damages whatsoever including, without limitation, damages for loss of use, data or profits, arising out of or in any way connected with the use of or inability to use the information and related graphics contained herein, whether based on contract, tort, negligence, strict liability or otherwise, even if Microsoft or any of its suppliers has been advised of the possibility of damages.