Greetings from Austria,
I'm expiriencing the same issues with a setup I built for a friend of mine:
Gigabyte GA-H77N-WIFI, H77 (Sockel-1155, dual PC3-12800U DDR3)
G.Skill DIMM Kit 8GB PC3-10667U CL9-9-9-24 (DDR3-1333) (F3-10600CL9D-8GBNT)
Intel Core i3-3225, 2x 3.30GHz, boxed (BX80637I33225)
Samsung SSD 840 Series 120GB, 2.5", SATA 6Gb/s (MZ-7TD120BW)
Before installing the intel drivers there is no issue! Both DVI-D and HDMI are working without any problems.
After installing the intel drivers, I need to disable and re-enable the driver via Windows 7 Device Manager.
The dual-head config works until the next reboot of the system.