How to Delete Rundll

1. Download and install a registry cleaner such as 'Wise Cleaner,' 'Tweak Now 2010' or 'Eusing' (see Resources). These software tools can fix Registry errors caused by malicious programs, and all are free downloads. This is generally the easiest way to solve any problems with Rundll files. It may not be necessary to delete the affected files, which could impair a vital process on the computer, and a Registry cleaner will give the files the necessary tune-ups.
2. Download and install antivirus and anti-spyware software. Many such programs are available online such as 'AVG,' 'Avast!' and 'Avira' (see Resources), and most offer free versions to home users. These programs can detect and remove spyware, a common cause of Rundll errors. Merely fixing the Registry may not solve the problem if an underlying virus still exists. Keep your software up-to-date to stay safe and ensure continuous protection.
3. Write down the name of the DLL file that is causing the problem. The file name will be reported on the Rundll error message. Browse to a process library, such as Task List, Process Library or Computer too Slow (see References) and search for the file name. This will tell you if the file involved in the error is malware.
4. Open the 'Start' menu, type 'run' into the search box, and press 'Enter.' This will open a Run dialog box that you can use to start programs manually.
5. Type 'services.msc' (without quotes) into the Run field and press 'Enter' to launch the 'Windows Services Management' program, which can be used to stop the offending process. Search for the DLL file name in the list on the right side. Highlight the offending file and click 'Stop' to end the service. If this doesn't work, the best course of action is a registry cleaning program.
6. Open a Run dialog box again if you would like to solve the problem manually. Type 'regedit' into the window and click the '+' sign beside 'HKEY_LOCAL_MACHINE' on the left side and then the '+' sign beside 'SOFTWARE.' Then, navigate to 'Microsoft,' 'Windows' and 'CurrentVersion.' Click 'Run.'
7. Locate the problem DLL file name and delete it. However, do this only if you have used a process library and verified that the file in question is a malicious process. Restart your computer to resolve the issue.