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Just built a new PC today and used the AsRock Z77 Motherboard. I haven't built a new PC in a long time, probably XP days. Went to install Windows 8.1 from a USB disk and Windows is telling me it cannot find my hard drives, even though they are listed in the BIOS.

I am using a SSD Samsung 850 EVO SATA drive with default BIOS settings. Any help at this point? I have tried my USB disk in all USB ports and tried Win7, still the same result.

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  1. Switch to IDE mode in the BIOS, then install Windows 8.

  2. Edit the registry as instructed here, reboot and switch back to AHCI in the BIOS.

Additionally ensure all the latest drivers from AsRock are installed and the BIOS is up to date.

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