If Windows 7 recognized one drive, it's not a driver/controller issue.  Does the drive have an MBR layout, or GPT?

For anything other than SATA OPERATION ATA mode advanced Format Drives REQUIRE F6 Drivers.

Otherwise you get the dreaded “Windows Setup could not configure Windows on this computer’s hardware” as well as not "Seeing" the drive.

AHCI REQUIRES F6 Mass Storage Drivers.  This is true for windows xp / vista / 7 / 8 / 10.

https://support.microsoft.com/en-us/help/2466753/

The minimum INTEL RST F6 driver required is 9.6  these Drivers are called AHCI drivers for AMD Chipsets and Forceware Drivers for the other vendor whose name is BLEEP.

https://www.intel.com/content/www/us/en/support/articles/000005646/technologies.html

Description	Version	Supported OS	Download
Intel Rapid Storage Technology F6 Driver This package provides the driver for Intel Rapid Storage Technology F6 Driver for OptiPlex, Precision, Latitude, XPS, Alienware, Inspiron, Vostro, and PowerEdge Servers series running the following Windows Operating Systems: Win 7, Win 8.1, and Win 10.More details	15.2.15.1058	WB32A WT64A Windows 7 64-bit WB64A Windows 8 32-bit Windows 8 64-bit WT32A Windows 7 32-bit

Intel Management Engine Components Installer This package provides the driver for the Intel(R) Management Engine Components Installer installs Intel Management Engine Interface Driver, Intel(R) Management & Security Status software, LMS service etc. and is supported on the Dell Latitude, Precision, XPS models, OptiPlex and Workstation Server running the following Windows operating systems: Windows 10 64bit, Windows 7 32/64 bit, Windows Server 2K12 R2, Windows Server 2K8 and Windows Server 2K16. Note: This driver is required to install in addition to chipset driver.More details	11.7.0.1054	Windows 7 32-bit Windows Server 2008 R2 WTS01 Windows 7 64-bit WT64A MWS80 WB64A W12R2 WST14
Intel USB eXtensible Host Controller Driver This package provides the driver for Intel USB 3.0/3.1 eXtensible Host Controller and is supported on Latitude/Precision/OptiPlex/XPS/Inspiron/Vostro/IOT systems running the following Windows 7.More details	5.0.3.42	Windows 7 64-bit Windows 7 32-bit W74S Microsoft Windows Embedded
Intel 100 Series Chipset Driver This package provides Intel 100 Series Chipset Driver and is supported on XPS 8900 running the following Windows Operating systems: Windows 7, 8.1, 10 .More details	10.1.1.13	Windows 7 32-bit Windows 7 64-bit WB64A WT64A

Thanks for your detailed reply.

I did install the F6 driver for my Win32 system. But I still cannot get the OS to recognize the disk.

As ejn63 suggested the problem may be with the disk itself. Ant thoughts?

Thanks for your reply.

I checked with MiniTool partition Wizard and it is MBR. See attached screen capture:

Is there something I can do with the disk? I have everything backedup so I can reformat or wipe it?

I'll leave things for a week or so to make sure it all works before I give it a Accept as Solution.