Thanks for the update.
I think you could now go ahead and continue the build.
Some tips you may wish to follow, in this order.
Change the I/O shield if installed in the case for the one supplied in the MB box
Check the stand-offs on the MB mounting plate, they must match exactly the pattern and number of screw holes in the MB, no extra ones.
Optical drive, connect to SATA socket #4. Second bay down from the top, leaving the top one for possible later install of a fan controller/USB 3.0/eSATA.
SSD, bottom bay, connect to SATA socket #0 Read manual for installation instruction.
HDD, Connect to SATA socket #3. (leave the bay at the end of the PCI-E slot where the GPU is installedempty, just gives more room for cabling.)
Video card, see manual for correct slot and number of cables.
Any other add on card.
Connect the cabling, except the HDD. connect the HDD after the OS is installed.
At the first boot, enter the BIOS, ensure that AHCI mode is enabled for the SATA sockets. Save and exit the BIOS.
Install the OS,
Connect the HDD.
Run the disk that came with the MB.
Run Windows Update.