I have an DH87MC - INTEL i7-4770k processor - 8 gb KHX16C9/8 Kingston Memory.
Windows 7 64 does not show any audio devices, I upgrade bios and disable/enable audio in Bios but no results.
There are some recommendations I can provide for you:
1. Make sure you have updated the bios and drivers using the latest ones from our web site.
You can also check some more instructions at the following link: