You may want to first check whether both monitors work or not under Safe Mode.
Make sure the memory is fully compliant with the memory controller which is located on the processor, compatibility information can be found here: http://ark.intel.com/
Furthermore, you can clear CMOS and proceed with a BIOS Recovery update. Instructions on clearing CMOS: http://www.intel.com/cd/channel/reseller/emea/eng/membership/411560.htm
Test using different driver versions in case it does work under Safe Mode.
Feel free to contact the technical support department for technical assistance along with these testing results; since this is not a known issue but an isolated problem with your board, technical assistance will help you address the problem and get the proper solution for your specific situation.
Contact phone numbers can be found here:http://www.intel.com/p/en_US/support/contact/phone
Thank You Karla for your prompt response.first, I admit that is a specific problem with the Apple HD Cinema M9178LL/A, but it's fully DVI-D Single Link compliant (not for sure about HD 3000)
second, both monitors work flawlessly with discrete add-in card, even on this mobo
then, bios is ok, mobo boots and works fine after reintegration, memory is ok too, it's Sammy M378B5273DH0-CH9, it can't be incompatible (sure, i also chek it with memtest with no errors), in fact, the trouble is to see any bios message when i have second monitor attached and sometimes has issue with entering setup during post, and i cant understand this shutdowns on any fail, this behavior can ruin my hard drive, and i'm worry.looks like we have weak/undone bios features or HD 3000 vesa modes compliance issue. that's hard.