|Power management options disabled in the BIOS have made Windows XP fail to install?|
You may have turned off the power management options in the BIOS because they were problematic, or you were advised to because they are not necessary on a desktop PC, but Windows XP requires them to be enabled or it will lock up during the installation process. The system will keep locking up at the Windows Setup screen. Just the blue screen will show - there will be no error messages, or any other kind of feedback. So, if you are having an installation problem of this kind, change the BIOS settings for ACPI Aware OS to Yes, and Power Management to "Enabled".
Moreover, if you are having problems shutting down Windows XP, or if it suspends indefinitely without turning off, use the right mouse button to click your Desktop, select Properties, click the Screen Saver tab, click the Power button, select the APM tab (if it's available). Check the box to enable APM and hopefully that will sort the problem out.