I have the same problem everyone else is describing, but I am not using raid, and I am using win7-64 bit too.
I have 1 SSD main boot drive, a 1 tb and two 2tb mechanical drives. (no raid happening there.) I have the same symptoms, system won't resume, if I get video mouse and keyboard don't work properly. Often it hangs when I go into the bios.
I have a new GA-X99-UD5 WIFI. In the windows event log I get C-Link service errors, "An error occurred with HDD Node Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index" All of which point to a similar HDD issue.