First build with Gigabyte GA-B85M-HD3, i5-Haswell 4590 CPU, using onboard graphics, ADATA 8GB of DDR3 1600 memory (2x4GB), WD 1TB HDD, Dual boot Win 8.1/MAC OS X Yosemite, HP dvd1265i optical drive, MAC compatible Bluetooth keyboard & mouse. Have carefully followed instructions for Dual Boot...