Comprehensive Guide to Resolving CI.dll Missing, Corrupted, or Blue Screen Errors

Step 1: Employ a DLL Repair Tool

The quickest fix for ci.dll errors is using a recognized DLL repair tool. These tools automatically scan your system, identify missing or damaged DLL files, and replace them with new, functional versions from their archives.

Pro Tip: Always download DLL repair software from legitimate sources to avoid malware infections.

Step 2: Manually Adding ci.dll

If the ci.dll file is missing, you can manually retrieve it from another machine via USB. Typically, this file can be found in: C:\Windows\System32 . Copy the ci.dll file into the System32 directory on the problematic machine and restart your PC.

Pro Tip: Ensure you’re copying the correct version of ci.dll that matches your system architecture (32-bit or 64-bit).

Step 3: Run SFC and DISM Scans

To repair corrupted system files, run the SFC and DISM commands. Open the Run dialog with Windows + R, type cmd, and execute it as an administrator. Input the following commands:

DISM /Online /Cleanup-Image /CheckHealth DISM /Online /Cleanup-Image /ScanHealth DISM /Online /Cleanup-Image /RestoreHealth

Next, execute:

sfc /scannow

Restart your computer after completion.

Pro Tip: Ensure your internet connection is stable while running the DISM command to download necessary files.

Step 4: Perform a Malware Scan

To eliminate possible malware interference, run a full system scan using Windows Security :

1. Open the Search feature with Windows + S, type Windows Security, and select it.
2. Navigate to Virus & threat protection, followed by Scan options.
3. Select Full scan and start the scan.

For added security, consider a second opinion with reputable antivirus software.

Pro Tip: Do not run multiple antivirus programs simultaneously; this can lead to further conflicts.

Step 5: Uninstall Recently Installed Applications

If the error started after installing new software, you may need to uninstall those programs:

1. Press Windows + R, type appwiz.cpl, and press Enter.
2. Select the troublesome application and click on Uninstall.

Restart after uninstallation to verify whether the ci.dll issue persists.

Pro Tip: Take advantage of third-party uninstallation tools for thorough removal.

Step 6: Execute a System Restore

If the previous steps did not yield results, reverting your system to an earlier restore point may help:

1. Type Create a restore point in the Search bar and select it.
2. Click on System Restore, select Choose a different restore point, and hit Next.
3. Select an older restore point and confirm by clicking Finish.

After the process, check if the problem is resolved.

Pro Tip: Regularly create restore points to avoid future issues.

Step 7: Reinstall Windows

As a last resort, reinstalling Windows will reinstall ci.dll and potentially fix any BSOD issues. To do this:

1. Prepare a bootable USB using the Media Creation Tool retrieved from Microsoft’s website.
2. Ensure the flash drive is inserted into the PC, adjust BIOS to boot from USB, and proceed with the installation.

Follow the installation prompts to complete the setup, and ci.dll should be restored in the System32 directory automatically.

Pro Tip: Backup your data before proceeding with a reinstallation to prevent data loss!

What causes ci.dll errors?

Can I fix ci.dll issues without reinstalling Windows?