Reinstall win7 from windows.old

Maybe this is not the right place to put my question, nevertheless I give it a shot !
When I start the Repair Option from the DVD it asks me if I want to repair the OS which is on drive H ! When I check drive H, there's NO windows (I never put it there anyhow!) When I "DIR" my C: windows is there, windows.old is there... So when I start copying like the tutorial describes, nothing can be found ... nothing can be copied...
The reason why I want to reinstall the .old version is that I "accidentally" did a clean install over my "old (and defective)" Windows.
Windows didn't start anymore, so I wanted to do a "repair" with my original DVD. Too bad I didn't notice immediatly that there's no repair option on my (OEM!) disk, and thought that at some point it would ask me to repair or clean install. But it didn't ask me anything, and before I knew it was doing a clean install. Now I downloaded the "repair-including-DVD" through a link I found here.
So first I want to reinstall my old (and defective)version, and then (try to!) do a repair.
What went wrong in the first place ... I guess I'll have to post it in another forum :) but if you want, I'll explain it here... it has something to do with putting the computer in sleep mode / energy saving mode ...
If any one has a sollution for (at first) putting my "old" OS (on H: ?!) back, then I can TRY to repair it.
Thanks in advance, guys !

Maybe someting to mention : I have a bad HD in my system, it's been there for a loooong time, I never disconnected it out because "everything" kept working (of course I lost everything what was on it, but I had a backup... :) )

It seems that the Windows boot loader is on H: and Windows is on C:

Please post a snapshot of Disk Manager.
Disk Management - Post a Screen Capture Image

Go to Control Panel\All Control Panel Items- Folder Options - View tab
Select show hidden files folders and drives.
Unselect hide extensions of know file types (for security, this item should always be unselected )
Unselect Hide protected operating system files.
Apply
Open Explorer and on windows.old.
Post a snapshot of Explorer - expanded windows.old.

Thanks for your fast reply, MegaHerz !
I think it's safe that I don't install anything in the "Clean Install". Because of this, I can't go on the internet (LAN not installed!...) to post screenshots. So I hope that PICTURES will help.
Please let me know if there's anything else you need.

Thank you so much for helping me ! (Gracias?) :)

Dropbox - 2016-10-19 15.25.32.jpg
Dropbox - 2016-10-19 15.29.18.jpg
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Paul,
First of all, you should make your actual (New) windows work properly.
Open device manager, find what items has drivers missing. Make them search on the old windows. As the old was working, all drivers are under C:\windows.old\windows.
Can you please expand the C: drive on the left side so we can see the tree 2016-10-19 15.29.18.jpg?
I've never done a Windows roll back from Windows.old so I'll do some search to find some answers.
Already did https://support.microsoft.com/en-us/kb/971760
In Brazil we speak Portuguese, not Spanish. As my father was Belgium, I also speak some french.
à bientôt

Edit.: When tying to recover, disconnect all other drives, living only the C: drive connected to the MB

I have read the instructions at
Windows.old folder - Restore into a new installation
should I just replace every c: by h: ?
Dropbox - 2016-10-20 16.03.33.jpg

Backup all your data from C: drive. Your old data is under Windows.old\users\Paul
Disconnect all other drives from MB. Very important
Boot from the installation disk. Go to repair and launch the command prompt. type dir h: If it shows a Windows.old folder, yes you're on the right drive. Then do what was on the link I gave you.

Hey thanx, Megahertz !
Making the backup will take some time I guess, so I'll do it in this weekend. (In the meanwhile I got a few important progs working again.)
The link https://support.microsoft.com/en-us/kb/971760 only gives me a blanco page, but Instead I'll follow the tutorial that I found here on Sevenforums. (Windows.old folder - Restore into a new installation)
I'll be back here after the weekend.
Again : thanks alot for your help.
Let's keep our fingers X'ed...

PS.Although I'm in the northern (Flemish/Dutch speaking) part of Belgium, lemme know if you visit you father's country of origin