.> Did you notice the errir code hr:0x80070005 ? I suggest that you google that and see if you did some ‘mods’ on you Windows installation.
I already did, but until now I did not find anything useful on the web for this kind of error.
.> Typical questions/thoughts/ideas/standard questions: …
I don’t think answering these questions will help: read on 
I made some progress: I modified your “create ISO.bat” to use “de_windows_7_professional_with_sp1_x64_dvd_u_676919.iso” along with your “Treiber2.10.7z”. Everything else in the batch file remained unchanged.
Guess what? The batch file WORKED flawlessly without any errors!
But, as we know, this same batch file (i.e. your original file) does NOT work with “en_windows_7_professional_with_sp1_x64_dvd_u_676939.iso” and “DriverSP2.9”.
I even tried to use your batch file with a different .iso: “en_windows_7_professional_x64_dvd_x15-65805.iso” and “DriverSP2.9”. Same errors.
Do you have any idea why the “de” combo works, but the “en” combo fails?
Update:
My modified “create ISO.bat” using the combo “en_windows_7_professional_with_sp1_x64_dvd_u_676939.iso” and “Treiber2.10.7z” WORKED.
Conclusion:
There must be something wrong with “DriverSP2.9”, because the combo “en_windows_7_professional_with_sp1_x64_dvd_u_676939.iso” and “DriverSP2.9” does NOT work.