If you mean why did I rollback the driver, it is suggested by windows to do this if performance problems are an issue. I interpreted this as one reason for the BSOD and display problems. Using available tools through Windows Control Panel was my first approach. After about 3 reports to wherever it is sent, I got back a response in the "Solve PC issues" system tray message thingy that Hewlett-Packard personnel wanted to have a crack at this. But the dataform presented was all about laptops, not desktops, and this just looked like another deadend backwater path to travel down.
EDIT: If you mean why did my profile say 2013? That was an oversight which I have corrected herewith. I am still using 2014, and this is the version in which I am experiencing this issue.