Hi,
Generally Clean boot mode is used for troubleshooting startup problems in
xp.
To clean boot windows xp, follow the instructions in the article given
below:
http://support.microsoft.com/default.aspx?scid=kb;en-us;310353&Product=winxp
or
How to perform a clean boot in Windows XP
INTRODUCTION
To help troubleshoot error messages or other issues when you cannot
determine the cause of the issue, disable common startup programs,
settings, and drivers to eliminate possible software conflicts when you
start Microsoft Windows XP. This procedure is known as "clean booting."
This article describes how to perform a clean boot, how to start the
Windows Installer service, and how to restore your system from a clean boot
state.
Note After you follow the instructions for a clean boot, you may
temporarily lose some functionality. If you restore the settings, you
restore the functionality, but you may receive the original error message
or experience the problematic behavior.
MORE INFORMATION
Search the Microsoft Knowledge Base for information about your specific
issue before you follow these steps. This information is not intended to
troubleshoot specific issues. If you are receiving a specific error message
or behavior, search the Microsoft Knowledge Base by using the text of the
error message and a description of the issue or behavior. To search the
Microsoft Knowledge Base, visit the following Microsoft Web site:
http://support.microsoft.com
How to perform a clean boot in Windows XP
Note You must be logged on as an administrator or a member of the
Administrators group to follow these steps. If your computer is connected
to a network, network policy settings may also prevent you from follow
these steps.
Click Start, click Run, type msconfig in the Open box, and then click OK.
On the General tab, click Selective Startup, and then clear the Process
System.ini File, Process WIn.ini File, and Load Startup Items check boxes.
You cannot clear the Use Original Boot.ini check box.
On the Services tab, select the Hide All Microsoft Services check box, and
then click Disable All.
Click OK, and then click Restart to restart your computer.
After Windows starts, determine whether the symptoms still occur.
Note Look closely at the General tab to make sure that the check boxes that
you cleared are still cleared. Continue to step 6 if none of the check
boxes are selected. If the Load System Services check box is the only
disabled check box, your computer is not clean-booted. If additional check
boxes are disabled and the issue is not resolved, you may require help from
the manufacturer of the program that places a check mark back in Msconfig.
If none of the check boxes are selected, and the issue is not resolved, you
may have to repeat steps 1 through 5, but you may also have to clear the
Load System Services check box on the General tab. This temporarily
disables Microsoft services (such as, Networking, Plug and Play, Event
Logging, and Error Reporting) and permanently deletes all restore points
for the System Restore utility. Do not do this if you want to retain your
restore points for System Restore or if you must use a Microsoft service to
test the issue.
Click Start, click Run, type msconfig in the Open box, and then click OK.
On the General tab, select the Process System.ini File check box, click OK,
and then click Restart to restart the computer. If the issue continues, the
issue is with an entry in your System.ini file. If the issue does not
continue, repeat this step for the Process Win.ini File, Load Startup
Items, and Load System Services check boxes until the issue occurs. After
the issue occurs, the last item that you selected is the item where the
issue is occurring.
Note Microsoft strongly recommends that you do not use System Configuration
Utility to modify the Boot.ini file on your computer without the direction
of a Microsoft support engineer. Doing so may make your computer unusable.
How to start the Windows Installer service
Note The Windows Installer service does not start if you disable Load
System Services. To use Windows Installer in this case, you must start the
service manually:
Click Start, right-click My Computer, and then click Manage.
In the left pane, click Services and Applications, and then click Services.
In the right pane, right-click Windows Installer, and then click Start.
If you run a Setup program without manually starting the Windows Installer,
you may receive the following error message:
The Windows Installer service could not be accessed. Contact your support
personnel to verify that the windows Installer service is properly
registered.
How to return from a clean boot state
Click Start, click Run, type msconfig in the Open box, and then click OK.
On the General tab, click Normal Startup - load all device drivers and
services.
Click OK, and then click Restart when you are prompted to restart your
computer.
I hope the above information helps you.
S.Vijay
This posting is provided "AS IS" with no warranties, and confers no rights