Sadly, I've been unable to make the update to my Intel HD Graphics 4000 drivers, thanks to HP's proprietary drivers. D:
I'm stuck at version 9.17.10.2857 from November 2012, and they have yet to release their version of Intel's current version 9.17.10.3071. I'm running into the same exact rainbow effect and flickering, except HP is preventing me from fixing the issue.