Hi, thanks for using JustAnswer.com I am Cris.
Locate a saved PDF somewhere on your PC. Right click on the file and click on "Properties".
A box will pop up click on the "Change" box. Then select your PDF program to open PDF usually Adobe, then click OK.
Now your PC will open PDF's with your PDF viewing program.
Let me know how you make out. If this resolves your issue please take the time to rate my service at the top and submit.
I wanted to follow up and see if my solution worked for you. Please let me know.