sldIM message after a reboot "A Windows reboot is pending from a previous installation."

I am trying to create an AdminImage for deploying SolidWorks 2016 SP2.0 running mostly in a Windows 7 environment.

Every time I launch the sldIM.exe a get this message:

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SOLIDWORKS Installation Manager

A Windows reboot is pending from a previous installation.
Some components may fail to install if you do not reboot first.

We strongly recommend you cancel the the installation and reboot.

Continue the installation?

               [OK]  [Cancel]

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I have rebooted several times but that does not clear the message; something is still causing the message to pop up and I am not sure how to debug this problem.

Has anyone else had this issue? If you resolved it, how did you do it?

Thanks