From my searches last night , it seems to be a legitimate pop up.

I don't know why it is showing up for you now though..
Maybe something got scrambled or deleted recently...and now the system is letting you know this file is missing...

It might have happened when the computer was worked on recently.

Another option is to try a system restore, back to before the pop up showed up...


you can find more details on the Microsoft site or HP site - in the support sections or just do a search on those sites.

you can find info on stopping the pop up also if you don't want to install the controller. or if it keeps popping up.

You do have Microsoft/Windows updates enabled - correct??
They usually are released on Tuesdays/Wednesdays and should be set to automatically install for you.