1st, make sure you're getting the Intel driver directly from Intel, not from Windows update; there's some issue with the Windows version, per the author of the QuickSync decoder.
2nd, I think the most recent driver has issues, so use the next most recent one, which is QuickSync Win7_64_15.26.8.64.2696
I believe that should let you use HW acceleration in MC17. It works fine for me on my desktop.
Finally, I don't have a dedicated graphics card in my system, but it might be causing you issues if both are trying to handle the video. I'm not sure how/where you would confirm which is being used, but the HD4000 should be plenty to drive ROHQ, so if you can get the driver above installed, and selected, it should work with HWA.