Found some solutions to help with driver issues that I experienced with video when imaging T5500, T3500, Optiplex 990.

If using Nvidia T5500 or T3500 please use the link http://www.nvidia.com/object/quadro-notebook-win7-winvista-64bit-296.35-whql-driver.html 

** T3500 No Video Card or Sound Detected
** T5500 No Video Card or Sound Detected

If using the ATI Card in the Optiplex 990

http://sites.amd.com/us/game/downloads/Pages/radeon_win7-64.aspx 

Inside Drivers_postinstall folder Windows_7_x64 990 video folder
amd <downloaded>
R289635 <downloaded>
r3079914 <driver feed>

** 990 Crashed IE with Stock Dell Driver Feed Drivers and to download each one above with <downloaded>

Unpackage and put in your drivers_postinstall video folder for each system.