XPS 8700 - 4TB Hard Drive - WIndows 10 - Driver Install Issue

This is strange but perhaps someone else has seen this as well...

XPS8700 doing a clean install of Windows 10 on an XPS8700 with the factory 1TB as drive C.

Additional Drives are the CDROM drive and a new HGST 4TB drive.

I downloaded drivers to the 4TB drive. ALL drivers have the same issue:
IF from the 4TB drive I click on the driver executable, the decompress and run fails EVERY time, EVERY driver so far up to the video driver.

IF I copy the driver file to the 1TB OS drive (desktop) and click on it.... IT WORKS.  

What gives?

Anyone know?

Thanks!