1. Insert the Windows 98 Startup disk that came with your PC. Reboot your computer.
2. Use the arrow keys to select 'Start Computer With CD-ROM Support' during startup.
3. Type the following command without the quotes '<CDDRIVE>: cd tools\sysrec pcrestor' and press 'Enter.' Replace '<CDDRIVE>' with the drive letter of your CD-ROM drive.
4. Remove the Startup disk when you see the Windows 98 Setup menu.
5. Select the 'Next' button when you see 'System Recovery' wizard. Enter your name and the name of your organization and select 'Next.'
6. Select 'Finish.' You will see a new wizard for Microsoft Backup.
7. Select 'Restore Backed Up Files' and hit 'OK.'
8. Follow the on-screen prompts to select the path where you saved your backup. Choose 'Select the most recent full system backup' when prompted for backup sets.
9. Select the system drive (typically the C drive) for what to restore. Choose the original location as the location where the DLL files along with other lost system files will be restored.
10. Click the option 'Always replace the file on my computer.' Click 'Start' to restore your lost DLL files.