SD-PEX40049 install Windows 7/8 instructions

Navigate to Device Manager.

In the IDE ATA/ATAPI controllers sections, find "Standard SATA AHCI Controller"

Right-click and Update Driver Software.

Select: Browse my computer for driver software.
Select: Let me pick from list of device drivers on my computer.
Check in: Show compatible hardware.

Click Standard SATA AHCI Controller
Click Have Disk button
Click Browse, navigate to Driver Windows files: 
1061 > driver > (Select OS) Windows 7 > (Select Bit version; x64 = Windows 64bit and x86 = Windows 32bit) > asahci64 (.inf) ; click next

Drivers should be installed.