Rundll is a windows system file and should be restored by running SFC from the start --> run. The file named ctrlpan.dll is most likely belonging to a program you have installed. Have you added any new software to your computer?
Surface Pro (2017) vs Surface Pro 4
20 groundbreaking 3D animation techniques
How to mine Bitcoin on Mac
Synology invites you to visit them at Insomnia on 26th – 29th August. Book your tickets now and visit Synology.