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#1
It's most probably trying to open a PDF file, judging by the fact that Adobe Reader is shown as first choice. To find out which file it is, select Adobe Reader and click OK. If nothing happens, sign out / sign in and this time select Internet Explorer.
It's then easier to stop that file trying to open when you know which file it is.
Have you worked thru the section before labelled 27?
Autoruns (free) is a good tool to examine start entries - you can search them all.
http://answers.microsoft.com/en-us/w...9-5c4538cc1593
Read down ignoring all the instructions until you get to
I've found where the rthdvcpl.exe program is being started.
Lenovo has added a scheduled task.
So if you want to maintain all your programs when upgrading to W10 and want to solve the popup box, you can access your system scheduled tasks and disable the one named "realtekHDAudio" that is calling "c:\program files\realtek\audio\hda\rthdvcpl.exe -s".
Just go to Control Panel/Administrative Tools/Task Scheduler and disable it.
Hope it helps.
Is yours a Lenovo? Often helps to complete your system specs..