You can't repair because there is nothing there to repair.
Once the Windows installation detects your drive, you will be able to format/repartition it from there. Or you can plug it into another computer and perform that work.
Now that you have your drives installed in a better order, you want to go into the BIOS and:
-make sure the drives are detected
-make sure the hard drive is in the boot menu (presumably 2nd behind the DVD drive).
Start the Windows installer, proceed through the steps, and see if your drive is listed at the drive selection screen. If it is, delete the existing partition and click next.
I don't think you would need any hard drive controller drivers at this level for the 970 on a Windows 8 install.
If you have never gone through a guide to installing Windows, now would be a good time to do so:
http://www.techrepublic.com/blog/wi...lete-guide-to-a-windows-8-clean-installation/