Since I bought a new laptop I wanted to give the old one to my sister as she burns CD=R's for in the car and her computer has no CD-burner while my old laptop has.
So I figured out how to restore to standard configuration and pushed the button. Unfortunately it stops at 64%, no matter what I try.
Tried restoring from the laptop files, from the cloud, from an old Windows XP installation DVD-Rom but nothing worked so far.
The XP states system and laptop re not compatible.
Then I found a set of old Acer restore DVD-Roms I burned ages ago when I had my first Acer laptop.
So far it is restoring. I keep my fingers crossed.
If I succeed in restoring the laptop Ican give it to my sister. Otherwise I'll take out the battery and harddisk and throw it in the garbage bin.
(I restore to factory configuration to wipe all private data - it works on a previous old laptop I gave her).