Having just built a Windows 7 PC, the only thing I would add is that straight after installing Win 7 Pro SP1, I tried to install the drivers for teh PCI-1750 GPIO card.
It said it couldn't because of driver signing, so I changed those settings in gpedit however it still came up with the same error message.
I installed all the updates, and once I did that, the driver showed as being installed and working. I guess that signed devices was one of the updates I downloaded.
Is the 32-Bit thing still a thing?
Epsom Hospital Radio