Okay guys, never mind. I found a CD of my Belkin wireless adapter and had installed drivers from there. So I have an internet now. Though ethernet adapter stays still invisible in Windows Explorer. Hmm
But despite the fact that internet is accessible now I couldn't make windows updates. Simply, can't update Windows and that's all. That's weird. Can't even update anything else. Like still there's no access to the Internet
IE browser and Mozilla (which I have installed) work though. Is this maybe the reason that I refused windows updates when I was configuring Windows right after its installation? Specifically saying I clicked on the button >Later< then. There was option: install Windows Updates now or later. Hmm I don't think that's the reason.
Anyway, besides this problem all system Win7 Live on my flash drive is slow and programs hang oftentimes, including Windows Explorer. I had no these problems after creation of Win10 USB Live on my another flash drive. And there are no problems so far with that one. Win10 USB Live runs smooth and good.
So, I'm going to nuke Win7 USB Live. It makes no sense to keep struggling with that.
BTW: I still will create another Win7 USB Live
Just out of my curiosity. I know that some other guys had no such problems after installation Win7 USB Live. You know, this just arouses my curiosity.