more than likely a driver issue of some sort. Your detailed description of the issues helped me come to that conclusion.
Thanks for replies. I get the error - "one or more protocol are missing on this computer". Sometimes when the screen turn off in the middle of working on computer I can't turn it on when I press on turn on button on the computer, only if I disconnect the cable of the Ethernet from the computer.
Wonder, what you should do now? Cut the cord away at all, then this problem is solved. I also had no problems with the Windows never, before I bought one. Never hadn't.