I´m running into the exact same problem. The Board seems to be running, the heatsink is hot, and the network activitiy LEDs are flashing green while beeing connected to my switch.
I´m using an Eizo FlexScanS1961, with both VGA and DVI cable - no success.
I returned the MB to the dealer, an bought a new one from another dealer.
I got the exact same problem with the new MB.
At home I have a 24" dell monitor with vga/dvi and a TV with vga.
I then took the MB to my work and attached it to a projector. Then it works!
So you should try out on more monitors
OK, I wouldn´t think about testing other screens, as my one is working perfect with all other sorts of HW.
But anyway, I will give it a try! Thanks for your reply!
Thank you very much for your tip! It works like a charme on a LG screen. Strange, my Eizo doesn´t recognize the board.
Saves me the hassle going through an RMA.
I had the exact same problem with 3 different boards and I have tried a 6 different monitors without luck.
Just before returning for a refund I looked for an BIOS upgrade, and that worked! It is a bit tricky to install without a monitor but it is doable. Get the latest .BIO file from http://downloadcenter.intel.com/Detail_Desc.aspx?agr=Y&ProdId=3060&DwnldID=18517&lang=eng and burn it to a CD. Load the CD on the target and turn off the computer. Remove the BIOS configuration jumper and start the board again. After 5 minuters turn it off and replace the configuration jumper again. After this you (hopefully) got the new bios and output to the monitor. At least I did.
This is explained in the Release Notes accompanied with the BIOS.