Windows 7: Using Diskpart/Clean to fix Windows 7 repair/upgrade issue.

Hi everyone,
I'm actually unable to repair my system files through the Windows 7 DVD.It always ends up with an error message saying something as ''could not be carried out and will restore to previous version...''.
Googling this issue ,I found this discussion involving gregrocker:
My question is if I do an image of Windows 7 with Acronis before running Diskpart/Clean,what will happen when I restore it.
Will the previous corruption that prevents me from repairing Windows 7 be restored?
Thanks.

I'd say yes.

Images contain everything in the imaged partition----including viruses, warts, corruption, whatever may have been there.

I'd say yes also. Imaging a system that is corrupted would just make an image of that corruption and then restore it as it was.

If you have irreparable System files then the next step is a Repair Install.

If you cannot boot then there are other steps here for Troubleshooting Windows 7 Failure to Start.

These lead up to the possibility of needing to rescue your files to run Factory Recovery or get the superior Clean Reinstall - Factory OEM Windows 7

I've got a few files I would like to repair, but the Repair Install option does not work for me.That's what this post is all about.
That's why I was thinking of another solution through Diskpart/Clean.
Thanks

It says nowhere in your first post that you have attempted to run a Repair Install.

If you'd asked to help troubleshoot a failed Repair Install then I'd ask you if you first have established a Clean Boot as given in Troubleshooting Steps for Windows 7 .

If that fails and there are performance problems then you are correct to want to run Diskpart Clean Command before Clean Reinstall - Factory OEM Windows 7 to wipe any GRUB boot code from the HD and give the cleanest slate.

I thought that this was self-explanatory as far as what I had attempted.
On the other hand,it's out of the question to clean the disk and make a reinstall of all programs and settings.
What I'm interessted in , is to run a successfull Repair/Install to fix somme files issues.In the past,I succeeded the first time but when I needed to do another one late after, it never worked.

I burned my Iso file to another DVD and on a USB key ,not to avail.I tried everything I could think of.
I even went to other Forums ,which I rarely do as I'm generally able to fix my own problems.

Generally speaking, when I can't nobody can...

And what was the result of the Clean Boot?

I read over the content of the link related to Clean Boot.
However, I did not see how this could be related to my issue, which is(only) that I can't Repair/Install anymore.
I already performed most of these steps in the past and nothing changed.
Thanks.

The very first thing that is done when Repair Install won't run is to run a Clean Boot, which solves the problem in about half the cases.

But you know too much to be bothered by what works here based on our experience helping thousands of users with these very issues. So you instead posted here to disabuse us of our ignorance, correct?