Good news to report!
I did the repair, the computer froze for some time and hard disk sound very busy.
When this was ready I rebooted and it is working again ;D
Thank you all for your help, especially Tech and Ashish.
BTW Ashish, there must be a misunderstanding you don’t need to be sorry for anything I said slow down actually it is a good thing, I have never found so much help so quickly within just minutes of typing my post.
I’m grateful and admire this forum! Keep up the good work.
Best Regards