Read the following, see if it helps you:
An application that is running in the background may prevent Windows
from entering the idle mode. Check your startup settings to find out
what is causing this. Applications that start with Windows can be
found here:
- the WIN.INI, section [windows], entries "run=" and "load="
- the Registry keys
HKEY_CURRENT_USER\Software\Microsoft\Windows\Curre ntVersion\Run
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\Curr entVersion\Run
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\Curr entVersion\RunServices
- the folders
C:\DOCUMENTS AND SETTINGS\ALL USERS\START MENU\PROGRAMS\STARTUP
C:\DOCUMENTS AND SETTINGS\{username}\START MENU\PROGRAMS\STARTUP
See also "How to Troubleshoot By Using the Msconfig Utility in Windows
XP" (
http://support.microsoft.com/?kbid=310560) and "How to Perform a
Clean Boot in Windows XP" (
http://support.microsoft.com/?kbid=310353).
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