DISABLE THE PREFETCHER COMPONENT WHEN TROUBLESHOOTING STARTUP
In order to accomplish this feat, the Prefetcher goes to work during the startup routine. However, this component can get in the way when you're troubleshooting startup problems.
If this happens, you may want to disable the Prefetcher. Follow these steps:
the Registry Editor (Regedit.exe).
the EnablePrefetcher value.
5. Close the Registry Editor, and restart Windows XP for the change to take effect.
When you've finished troubleshooting the startup problem, be sure to go back to the Registry Editor, and change the value of EnablePrefetcher back to 3.
NOTE: Editing the registry is risky, so be sure you have a verified backup before saving any changes.