To check your CD-ROM and Hard Drives:

• Right click on the "My Computer" icon and select "Properties" from the pop-up menu.
• Click on the "Performance" tab
  • You should see a line that reads "Your system is configured for optimal performance."
  • If you see anything about your hard drive or CD-ROM running in "DOS compatibility mode", you'll want to configure them for Win95 Protected Mode support.
    • Contact your computer manufacturer for information on setting up Protected Mode support.
      (for Microsoft's information on this problem click on the underlined links).
• Select the File System button:
  • Hard Disk Tab:
    • Set the Read-ahead optimization to: "Full"
  • CD-ROM Tab:
    • Set the Supplemental cache size to: "Large"
    • Set the Optimize access pattern for: "Quad-speed or higher"
  • Troubleshooting Tab:
    • Make sure nothing is checked.
• Select the Virtual Memory button and make sure that "Let Windows manage my virtual memory settings" is marked.
• Search your hard drive for a file called updat_cd.com. This is an outdated CD-ROM caching program that has been found to cause conflicts with newer CD-ROM programs.
  • If you have the file on your system, rename it and reboot your computer.
• If the above information has not solved the problem please run Msinfo with the Blizzard cd in the cd-rom drive.
• Also please run Cdcheck with the Blizzard cd in the cd-rom drive.
  • These will both create a .txt file. Please attach this .txt file to an e-mail to support@blizzard.com along with a description of the problem.