(Redirected) Problem with Windows 10 upgrade from Windows 7 with XP Mode-Unable to recognize CD/DVD

I did a new install of Windows 7 last year when Microsoft discontinued support of Windows XP.  This year I used the free upgrade to Windows 10

I have an OPTI Plex 755 which is  probably 5 years old.

Dell System Detect does not execute after the Windows 10 install.  I printed out the Error Summary.  It began:

Activation of C:\Users\Paulette|AppData\Rjoaming\Microsoft\Windows\Start Menu\Programs\Dell\Dell System Detect.appref-ms| resulted in exception.  Following failure messages were detected:

+the deployment identity does not match the subscription.

There is more.  Does anyone have an idea what the problem maybe and how I can regain use of my cd/dvd?