1. Clean the registry and repair missing DLL files using a registry cleaner program. To do this, download and install a free registry cleaner program such as CCleaner.
2. Launch your program after it has installed and click the 'Registry' button on the left panel. You will see the 'Registry Integrity' window.

3. Place a check on 'Missing shared DLL files' and all the other options in the 'Registry Integrity' window.
4. Click 'Scan for issues.' CCleaner will scan the registry for missing or corrupt DLL files as well as other components that cause program errors.
5. Click 'Fix selected issues' when the scan is complete and click 'Yes' to backup the registry when prompted.
6. Click 'Fix all selected issues' when the registry backup is complete and click 'Yes' to repair the missing or corrupt DLL files. Move to the next step if you are still running into DLL errors.
7. Restore the computer back to an earlier time before you started experiencing the DLL errors. To do that, click the Windows 'Start' button and click 'All Programs.' Scroll up and select 'Accessories.'
8. Select 'System Tools' and click 'System Restore' to open the System Restore wizard.
9. Click the 'Restore my computer to an earlier time' radio button and click 'Next.' Select the day and time you want to restore your computer to and click 'Next.' Click 'Next' to restore the computer back to the selected time.
10. Uninstall and reinstall the program that is running into DLL errors if you are still having DLL problems. To uninstall the program, click the Windows 'Start' button and click the 'Control Panel.'
11. Double-click 'Add or Remove Programs' to open the Programs window. Scroll through and the click the program you want to uninstall. Click 'Remove' to uninstall it from your computer. Reinstall the program either using the installation disc if you have one, or by navigating to the download page if you installed it from the Internet.