I operate windows 8. Normally when I need for some files in control panel such as device manager, windows update. All I need is to search it from search button on the right side of windows.

However, one day most of the shortcut if not all are no longer accessible. It says, "This file does not have a program associated with if for performing this action. Please install a program or, if one is already installed, create an association in the Default Programs control panel."

Please help me, thank you and regards.