How to Fix RunDll Errors on Startup [Step-by-Step Guide]

Updated By

Linda 

Written By

Linda 

Last updated on April 22, 2024

Are you dealing with a RunDll error at startup? Below is a real user case from the Microsoft Community forum: Microsoft Community:

Do you know what it is and how to fix it? This tool will explain and simplify the RunDll error at startup, and provide a step-by-step guide to fixing this common issue. Keep reading to understand the root causes of RunDLL errors and detailed troubleshooting steps.

What is a RunDll Error?

A RunDll error that appears at startup indicates a failure to execute a Dynamic Link Library (DLL) file during the initialization of the Windows operating system.

What causes a RunDll error at startup?

These errors typically occur due to damaged or missing DLL files, leading to interruptions during the system startup process. When you encounter a RunDll error, it means that your system is having trouble locating and loading the necessary DLL, thus preventing the execution of a specific program or process.

To better understand and address the issue, it is crucial to explore its underlying causes. Common triggers include malware infections, incorrect software installations, or corrupted system files.

How to Fix a RunDLL Error at Startup - 5 Ways

Now, let's tackle the RunDLL error at startup. In this section, we'll walk you through four different methods to resolve the issue. Here's a one-click button to share this guide on social media:

Method 1: Use Boot Repair – The Best Option

To quickly and effortlessly fix RunDLL errors at startup, you can leverage the features of the Partition Master Professional tool. This powerful utility goes beyond conventional solutions, offering a comprehensive approach to repair boot issues. Specifically designed to handle startup-related problems, it is an ideal solution for resolving RunDLL errors that occur during booting.

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Follow the steps:

Step 1: Connect the external hard drive/USB to the PC, launch AOMEI Partition Assistant, click "Create Bootable Media" and then click "Create Bootable USB Disk".

Step 2: Choose the USB drive or CD/DVD that you want to use, then click Create. You can also burn the Windows ISO file to a bootable media.

Step 3. Connect the bootable drive to the new computer and press F2 or Del to enter BIOS. Set the WinPE bootable drive as the boot disk, then press F10 to exit.

Step 4. Restart your computer and enter the WinPE interface. Then open the “Partition Master” tool and click on “Boot Repair” under “Toolbox.”

Step 5: Select the system you want to fix, then click on "Repair".

Step 6: Wait a moment, and you'll receive a notification stating that the repair was successful. Click "OK" to finish the process.

Click Repair to finish the process.

"Other Key Features of Partition Master Tools"

Here are some applicable scenarios related to DLL errors at startup:

• Solve "Your PC did not start correctly" issue
• Fix hard drive not booting issue
• Address "Windows 11 Startup Repair not working" problem

Method 2: Scan Your Hard Drive

With AOMEI Partition Assistant, the system disk can be automatically scanned to detect and fix bad sectors, file system errors, and other disk issues with high efficiency. Download it now and follow the tutorial:

Step 1: Right-click on the problematic target partition.

Step 2. Choose Utilities > Disk Utility.

Step 3: Choose whether to hide the partition.

Click “Start” to begin checking your disk for errors.

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Method 3: Use Windows Startup Repair

Since a corrupted shared DLL file can cause this issue, you can also fix a RunDLL error at startup with a Windows Startup Repair. Follow these steps:

Step 1: Press the "Windows + I" keys simultaneously to open "Settings."

Step 2: Click on “Update & Security” and then “Recovery” from the left menu.

Step 3: Click on “Restart now” under “Advanced startup”.

Step 5: Tap on "Enable Debugging" in the new settings list.

Method 4: Manually remove RunDLL errors at startup.

You can also manually fix RunDll startup errors by navigating through the Registry Editor. Follow these steps:

Step 1: Press "Windows+R" to open the "Run" box. Type "regedit" and press "Enter" to open the Registry Editor.

Step 2. In Registry Editor, you need to find the filename that was displayed in the RunDLL error. Press Ctrl + F to open the search function, type in the filename, and click on "Find Next." It might take some time to find the right file, so be patient.

Step 3: Right-click on the entry and select “Delete” to remove the associated registry entry for the missing DLL file. Close the Registry Editor when you're done.

Open the Run dialog again, type taskschd.msc, and press Enter to launch Task Scheduler.

Step 5: Click on "Task Scheduler Library" and look for an entry in the center pane that corresponds to the file mentioned in the DLL error message. Disable any identified entries by right-clicking them and selecting "Disable." After successfully disabling the process, close the Task Scheduler.

Step 6. Restart your computer and check if these changes have resolved the issue and the RunDLL error is removed.

Method 5: Delete Temporary Files

Temporary files in the AppData folder might prevent RunDLL from running correctly at startup. To resolve this issue, you can follow these steps to delete temporary files in Windows:

Step 1: Press the Windows key + R to open the “Run” dialog box.

Step 2: In the Run dialog box, type C:\Users\YourUsername\AppData\Local\Temp, and then press Enter. (Replace "YourUsername" with the correct username.)

Step 3: Press "Ctrl + A" to select all the files, then right-click and choose "Delete."

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Conclusions

Now, the intricacies of fixing the RunDLL error at startup have become quite straightforward. This guide uncovers the reasons behind these glitches and offers a step-by-step resolution.

For an efficient and user-friendly solution, consider using the Partition Master tool. This utility not only fixes RunDll errors but also enhances system performance by optimizing disk space management. Download Partition Master to ensure a hassle-free boot process.

Equipped with either the quick fix or the manual method, you now have the capacity to address RunDll errors and ensure your system starts up smoothly and error-free. Implement the recommended solutions or explore the utility features of Partition Master to make the most out of your computing experience.

"FAQs on DLL Errors related to Startup"

If you have more questions or inquiries about the RunDll error, you might find the appropriate answer in this list of FAQs.

**1. How to fix the Rundll issue on Windows 11?**

While the exact steps may vary slightly depending on the version of the Windows operating system you have, the core principles remain the same. Whether you're using Windows 11 or another version, consider the following approaches:

• Use a Partition Master Tool: This utility offers an all-in-one solution to handle Rundll errors. Its Boot Repair feature can quickly diagnose and fix incorrect startup configurations.
• Try Windows Startup Repair: Windows has a built-in repair tool. Access it through the Advanced Startup options and use its scanning capabilities to identify and potentially fix corrupted system files causing the error.
• Scan for Malware: Conduct a full scan using a reliable antivirus program to eliminate any potential malware presence.

2. How to fix Rundll32 issues?

The built-in SFC (System File Checker) tool in Windows can scan and repair corrupted system files, such as rundll32. Follow these steps:

Step 1. Open Command Prompt as an administrator.

Step 2. Type sfc /scannow and press the Enter key to start the scan.

Follow these steps to fix DLL errors in Windows 10:

Step 1. Open Command Prompt as an administrator.

Type **DISM.exe /Online /Cleanup-Image /RestoreHealth** and press Enter to run the Deployment Image Servicing and Management tool.