1. Click the Windows 'Start' button and type 'msconfig' into the text box. Press 'Enter' to open the window. If you are using an older Windows version, click 'Start' and then select 'Run.' Enter 'msconfig' and press 'Enter.'
2. Click the 'Startup' button. This opens a list of applications that run each time you start your machine. The check boxes are used to enable and disable the startup applications.

3. Remove the check mark in the box labeled with 'Rundll.' Click 'OK' to save the changes. A popup appears with the option to reboot your computer. Click 'Restart' to reboot your computer. The next time it boots, the rundll error will not occur.