Hello forum,
I`d like to give a short description of my solution.
1st, thanks to the first visitor of my thread - Willy2.
Looking at his profile, I recognized his reply at the Guide - Verry Slow Scan Times When Checking for Updates.
HTML:
https://www.sysnative.com/forums/windows-update/20476-guide-windows-vista-7-8-very-slow-scan-times-when-checking-updates.html
There he linked an article at
how to update the update client.
I tried this before, but just to install the newest client caused an endless looking for updates window. On that site Dalai told about his script that would install that client without searching in the update database.
I ran that script and after that I used, without trying to get updates, the tweaking.com windows repair tool. Rebooted in securemode I started direct to repair including the beta options.
The normal time of using that tool was about 1 hour. This time it took at least 3 hours.
Next reboot.
Windows searched for updates - found updates with an ammount of 1,5GB - a few hours more and the above posted sfcfix report showed no more errors.
When I started that tool first, after changing the defect harddrive, I had more than 300 errors.
Meanwhile my brother got his laptop back.
Thank you all for your realy helpful forum!!
bottentier