Is this thread dead? Are you still responding Intel? I'd just like to add my interesting experience that demonstrates clearly that Intel's drivers have some *serious* issues with installing invalid DDC timings and screwing up monitor outputs:-
- I bought an Asus P8Z77-M motherboard & i5-3570k CPU and installed it with a discrete AMD 7790 HD graphics card with the monitor hooked up to the discrete card then installed AMD's drivers. Works perfectly.
- Then I enabled dual-monitor & Virtu-MVP support in the BIOS (with the intention of using it in "D-Mode" (GFX card is primary output but Virtu-MVP enables Intel output for QuickSync encoding). Also works perfectly (where Windows 7 uses its own standard "VESA" type driver).
- Then I installed Intel's drivers. Monitor goes dead. Not just on the Intel DVI output - but even on the AMD discrete card DVI output!
It's clear that this ongoing problem has nothing to do with "iffy monitor cables" because they work perfectly well at exactly the same 1920x1080x60Hz frequencies on the same motherboard output without Intel's drivers, not to mention work flawlessly on a multitude of different AMD / nVidia discrete cards + monitor combinations.
Whatever installing Intel's driver does is basically screwing up whatever timing signals Windows 7 sends to the monitor.