I have just built my first PC, and I am getting ready to install Windows 7 64 bit. When I select "Custom Install", I get an error stating that Windows can't be installed to the HDD. I have one Seagate 500GB drive installed that displays as "Disk 0 Unallocated Space" with 465 GB available. I have also tried to create a partition using DiskPart, but I get an "I/O device error" that won't allow me to create a partition.
I am using an ASRock Z68 Pro3 Gen3 with the HDD set to AHCI. Any ideas?