UPD: As I've understood the key is in the power plug. So the fix-it algorithm is like that: you unplug the tablet from all ports and from the power socket. Then turn off antivirus, delete the soft of all tablets from your system. Restart pc or laptop. Turn off antivirus again. Then download the latest driver for your model of tablet from the oficial website and install it. Then you should restart your pc or notebook and turn off the antivirus again. Then you should connect all the cables in such an order that the power plug is the last one. Then you can turn the tablet on and check if it operates. Ofcourse, your OS and graphic driver (nvidia etc) should be updated beforehand.
