OK Cataountain, following the instructions at the links you provided:
Running the file from set_skp2015_gfx_minimum.zip washed out my screen and caused Restart to cycle forever, forcing me to do a hard reset. Everything SEEMED back to normal after the reboot.
Then (after the restart) running the file from get_skp2015_gfx_settings.zip produced a text file which only contained the following:
ERROR: The system was unable to find the specified registry key or value.
ERROR: The system was unable to find the specified registry key or value.
ERROR: The system was unable to find the specified registry key or value.
ERROR: The system was unable to find the specified registry key or value.
ERROR: The system was unable to find the specified registry key or value.
So then I ran the ‘OpenGL Config4’ support tool, which shows disabled for Sketchup 2015.
http://forums.sketchup.com/clicks/track?url=http%3A%2F%2Fwww.posh.de%2Fcms%2Findex.php%3Foption%3Dcom_docman%26task%3Dcat_view%26gid%3D131%26Itemid%3D236&post_id=45241&topic_id=14833
Uninstall, reboot, reinstall Sketchup 2015 32-bit, and attempt to run it. After clicking on “Choose Template”, the “Welcome to Sketchup” dialog disappears and then – nothing. Sketchup fails to run.