Just got a Z77-D3H and i5 3570K, upgrading from a i3 530.
Everything went fine hardware wise, and its all working. 5.96 on Cinebench. (side note: is that good? I have 4Gb Kingston DDR3)
Anyway, the only niggling problem I have is it takes a long time between the white Bios screen and starting to boot windows. Approx 10 seconds. I see a flashing underscore at the top. Then blackness for 10 seconds, then flashing underscore again and then windows boots.
If your system works in IDE mode but not in AHCI mode then the following procedure should solve the problem:
1) Run the Registry Editor (regedit.exe)
2) Navigate to Registry Key: HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Msahci
3) Set the "Start" value to 0 (zero)
4) Navigate to Registry Key: HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Pciide
5) Set the "Start" value to 0 (zero)
6) Shut down
7) Start up again, but before Windows boots go into the BIOS configuration screens and change the disk mode to "AHCI". Save the new BIOS configuration and restart so that Windows boots.
When Windows starts, it will detect the change, load new disk drivers, and do one more reboot to start up with them.