OK, so the 7.7.1 install first failed, and said that i had to reinstall later. So I hit the installer .exe file. This time it installed without error.
I then went to run it from the Start Menu. Here's what happened next.
1. Error: "Itunes has stopped working. A problem caused the program to stop working correctly. Windows will close the program and notify you if a solution is available. <Close Program>"
(I haven't gotten this with 7.x, but it was very common when running 8.x).
2. There was an error at the lower right stating "iTunes was closed ...for security reasons ...blocked the startup." It said to click for more info.
3. I then get a popup entitled "What is Data Execution Prevention? Data Execution Prevention (DEP) is a security feature ... " I hit the X on that.
These items are repeatable. That is, when I try again to run iTunes from the Start menu, all 3 things happen in the same order. Same thing happens if I launch iTunes from the icon on the desktop.
Just to go the extra mile here, I found Local Disk/Users/Jon/AppData/Local/Apple Computer/iTunes. But that just contains "iPod Devices" and "iTunesPrefs."
I seem to be digging a bigger and bigger hole here.
Maybe I should upgrade to the latest Microsoft OS (post Vista)? Has anyone tried that?