Windows 7 in-place upgrade install fails

I discovered that my previously working scheduled back-up was no longer working and could not be reset. The task scheduler was reporting errors.
I tried restoring to an earlier version but no luck. I run system file checker to discover several file problems that were not fixed by the system. So I decided to run the in-place windows install upgrade option from the original OEM Windows 7 SP1 DVD.
All worked as expected until just before the 'enter product key' page which has never appeared? I have a black screen with the right hand bottom message Windows 7 build 7601 not a genuine windows version.
I have tried to re- boot, and get to the safe or normal restart screen.
The safe mode options return 'windows is unable to load safe option, set up will continue after restart' but all that happens after reboot is a black screen and message again.
The start windows normally runs and the windows loading logo is displayed, after which I see the black screen and message again. Disc activity stops and nothing happens!

I have a genuine windows disc and product key that was activated and verified on the machine.

I have now run out of ideas. i understand the principals but not an expert. Can anyone help please?

Nigel

Thank you for replying and the welcome.

I have an original disc from the computer builders, labelled
Windows 7 Ultimate
Includes service pack 1
64 bit software
Includes windows anytime upgrade
Dated 2011

The COA sticker is attached to the pc case.

Previously when the pc was working the system showed the windows installation as genuine.

I am trying to do the Repair Install as shown, it appeared to get to the last step but I never saw the enter product key screen. Only the black creen, no icons and the message about not being genuine.

Thank you again, any help gratefully received

The DVD is labelled Microsoft so I assume although supplied with the pc by the builders it looks an original Microsoft disc and genuine. The COA also looks genuine and original. The builders are a long established reputable pc builder and supplier and I am confident they are. My problem is they are based in England, I now live in France.

The pc was running Windows Ultimate as installed from day one by the builders. I was trying to repair the damaged files by running the Windows Ultimate disc as an install upgrade. I am beginning to think this was a mistake?!

Hope this makes my position clear.

The disc is not labelled upgrade.

I purchased the system with Windows 7 Ultimate installed, the disc used was as supplied at that time, also Windows Ultimate as detailed previously. Shown here....

Windows 7 Ultimate
Includes service pack 1
64 bit software
Includes windows anytime upgrade

I cannot boot windows 7, a reboot results in the screen asking to either start in safe mode or start windows normally.
All safe modes begin loading the drivers but then shows a screen saying safe mode cannot be loaded, setup will continue after a system restart.
Choosing start normally, shows the loading Windows logo, but then the black screen appears.

Regarding the Repair install tutorial ......

I got to step 13 and saw it had started the process of 'Installing features and updates'

I cannot say if it showed 'Completing Upgrade' step, the next thing I saw was a black screen, no icons and the warning message in the bottom right of the screen about a non genuine windows version.


Thanks for your continued help.

Thank you. I only got to step 13, never saw the screens in step 14 or 15.

The DVD was supplied from new, the pc never had Vista and upgraded. It was Windows 7 Ultimate from new.

As I said the process was running until step 13 then black!

No one else has installed anything in France.

I am beginning to think installing clean is going to be my only option but how can I do that? The system will only reboot to the status I have described. Is there a way to do this?

The system has an empty second HDD and thought I could install onto that, but I cannot get the Windows DVD to do anything else than reboot to the faulting condition I have described. What about disconnecting the first HDD, the one with the operating system on it, then trying a clean install on the other drive? If that works could I then reconnect the first HDD and access files?

Thanks