Hi SuzuKube,
Sure, everytime that disable and enable or install graphics drivers.. when i restart pc, graphics system
crash with black screen.
Always after w.8.1 whith hd4000 3316 and 3345 drivers version but with amd radeon 13.9 drivers final version.. not the beta version.
Panel control and Catalyst don't run.
Amd catalyst error whet start pc.
So.. no cards.. no games...
I'm not a computer technician but i think that our dual graphic system needs than hardware, drivers and system of both card works fine.
Amd drivers works fine but hd4000 crash the system.
Maybe the best solution is a Windows update.
But the next solution at short term... the next intel drivers version for hd 4000 by nic and his team.
Good luck!