Cannot install Windows 8.1 on Late 2013 iMac

Attempting to install Windows 8.1 (retail) using Boot Camp Assistant but when I get to the "Select disk to install windows" screen, nothing appears.
I'm using a retail copy of the Windows 8.1 full installer DVD and I have the midrange 21.5" late-2013 iMac.

Installed my retail copy of Windows 8.1 from Windows 7 without any hiccups or hacks. Windows 7 can be installed in trial mode for free and easily by downloading a legal ISO from Digital River. Create a USB installation with Boot Camp Assistant and proceed as normal using the Windows 7 ISO. During Installtion, skip entering a license. After Windows 7 is successfuly installed, boot back into OSX and create just a drivers USB using Boot Camp Assistant. Boot back into Windows, insert your retail Windows 8.1 disc or use your download and let it install. Be prepared to do several "Hold-Option" boots to kick it into windows. Installation probably had 6 reboots.
Digital River ISOs
Windows 7 Home Premium 32Bit:
http://msft.digitalrivercontent.net/win/X17-58996.iso
Windows 7 Home Premium  64Bit:
http://msft.digitalrivercontent.net/win/X17-58997.iso
Windows 7 Professional 32Bit:
http://msft.digitalrivercontent.net/win/X17-59183.iso
Windows 7 Professional 64Bit:
http://msft.digitalrivercontent.net/win/X17-59186.iso
Windows 7 Ultimate 32Bit:
http://msft.digitalrivercontent.net/win/X17-59463.iso
Windows 7 Ultimate 64Bit:
http://msft.digitalrivercontent.net/win/X17-59465.iso
Thanks, and I hope this helps whoever needs it. I always hate when someone finds a fix and never reports back.

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    Video of issue:
    Benchmarks from the old motherboard on the Crucial M500 SSD taken with Crystal DiskMark
    Benchmark from MSI Z87-G41 PC Mate (MS-750)
    on SATA 3 port set to AHCI
    CrystalDiskMark 3.0.3 x64 (C) 2007-2013 hiyohiyo
                               Crystal Dew World
    * MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]
               Sequential Read :   264.792 MB/s
              Sequential Write :   143.991 MB/s
             Random Read 512KB :   250.614 MB/s
            Random Write 512KB :   142.545 MB/s
        Random Read 4KB (QD=1) :    24.176 MB/s [  5902.3 IOPS]
       Random Write 4KB (QD=1) :    82.152 MB/s [ 20056.5 IOPS]
       Random Read 4KB (QD=32) :   210.018 MB/s [ 51274.0 IOPS]
      Random Write 4KB (QD=32) :   134.663 MB/s [ 32876.6 IOPS]
      Test : 100 MB [C: 35.4% (39.6/111.8 GB)] (x5)
      Date : 2014/05/24 3:25:19
        OS : Windows 7 Ultimate SP1 [6.1 Build 7601] (x64)
    Benchmark from MSI Z87-G41 PC Mate (MS-750)
    on SATA 3 port set to IDE
    CrystalDiskMark 3.0.3 x64 (C) 2007-2013 hiyohiyo
                               Crystal Dew World
    * MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]
               Sequential Read :   181.472 MB/s
              Sequential Write :   141.275 MB/s
             Random Read 512KB :   177.430 MB/s
            Random Write 512KB :   141.393 MB/s
        Random Read 4KB (QD=1) :    21.646 MB/s [  5284.6 IOPS]
       Random Write 4KB (QD=1) :    68.922 MB/s [ 16826.7 IOPS]
       Random Read 4KB (QD=32) :    25.411 MB/s [  6203.9 IOPS]
      Random Write 4KB (QD=32) :   108.275 MB/s [ 26434.3 IOPS]
      Test : 100 MB [C: 35.4% (39.6/111.8 GB)] (x5)
      Date : 2014/05/24 3:41:42
        OS : Windows 7 Ultimate SP1 [6.1 Build 7601] (x64)
    Benchmark from MSI Z87-G41 PC Mate (MS-750) **Replacement from RMA**
    on SATA 3 port set to AHCI
    CrystalDiskMark 3.0.3 x64 (C) 2007-2013 hiyohiyo
                               Crystal Dew World
    * MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]
               Sequential Read :   469.045 MB/s
              Sequential Write :   138.655 MB/s
             Random Read 512KB :   419.083 MB/s
            Random Write 512KB :   135.032 MB/s
        Random Read 4KB (QD=1) :    26.454 MB/s [  6458.5 IOPS]
       Random Write 4KB (QD=1) :    89.189 MB/s [ 21774.7 IOPS]
       Random Read 4KB (QD=32) :   252.818 MB/s [ 61723.0 IOPS]
      Random Write 4KB (QD=32) :   129.909 MB/s [ 31716.1 IOPS]
      Test : 100 MB [C: 37.1% (41.5/111.8 GB)] (x5)
      Date : 2013/03/10 10:02:50
        OS : Windows 7 Ultimate SP1 [6.1 Build 7601] (x64)
     

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