Fixing the annoying Rundll pop up when you start the P.C

A simple way to fix it would be to go to run (windows button +r) then type in taskschd.msc and hit enter.Now click on the Task Scheduler Library folder in the left panel, and locate the Background Container task in the middle panel;right click on it and choose to delete this task then exit Task Scheduler. Now re-start your computer and the problem should be eliminated- if not, then scan your device for viruses.