Hello,
first thanks all for your help. After trying for more than a week, i gave up and installed Win 10 yesterday. Even after a new Win 7 install, the next updates screwed up the system completely, and no installation Point was able to fix that.
Not much problems with installation of 10 despite graphic card driver (GOD!), and all looks flat and two-dimensional (is this really a
new design idea?), but at least it works

Wlan breaks off regularly, and is also much slower than before, but maybe there's a control panel somewhere in the universe.
I completely fail in seeing the logic of the start menu. is there a reason to make it that uncomfortable and unintuitive. And don't get me started with this bad Apple "Store" copy
Does anyone know how to switch off the language auto correction system, i do not find the options. (this said, all options are well hidden now, if you want to describe it positively).
Why Win 10, after all

Win 7 worked perfectly, before those late updates. Is this a marketing idea, of planned obsolescence?