How do I force the computer to boot in Safe Mode?

In Normal Mode Windows, click START > click in the START SEARCH box (or click RUN in XP) > type MSCONFIG and press the ENTER key. When the SYSTEM CONFIGURATION windows opens, click on the BOOT tab (or the BOOT.INI tab in XP), check the box that reads SAFE BOOT. Click APPLY > OK > and then restart the system.

Once in Safe Mode, repeat the steps above, only this time uncheck the SAFE BOOT box prior to restarting. This will allow the system to boot to Normal Mode on your next restart.