Hi. Please download and install the program Registry Lite from here:http://www.resplendence.com/reglite
Once it is installed, please double click on the icon that should now be on your desktop. If an icon is not there, then check under programs portion of the Start Menu.
Once it is opened, click on search, then search registry.
In the new screen, enter hpsdpappcoreapp.msi in the text to search for field, and / in the search in field, then press the magnifying glass button at the bottom.
Can you tell me what keys come up?