A customer of mine had an issue with deploying a Windows 7 32-bit image to some computer models.
On first boot an error popped up stating "Windows can't verify the publisher of this driver software".
The same message as in the following picture.
After some research the default driver Intel.iaStorV.6.2.0.1015 was the culprit.
This driver was being applied to the system although in the end a newer driver was being used for the storage controller.
I deleted this driver from the DriversDB (<installdir>\Deployment\DriversDB) using the DriverManager utility (<installdir>Deployment\Imaging\ghost\x64\DriverManager64.exe). Afterwards I forced an update of the DriversDB package by going to "Settings > All Settings > Deployment and Migration > Packages > DriversDB" and clicking Update distribution points. And finally ran an update configuration on the site server to update.
An other option might have been to change the "Bypass Driver Validation" from All to None in the configuration of the Deploy Image task.