Thanks for the reply. Wether the Keyboard (original Teclast Keyboard) nor the Buttons on the tablet are sensitive to push the device into the BIOS mode. There is no reaction, just rebooting the device all time.
Does it help to remove the battery from the tablet? I am very frustrated, the tablet is 6 months old and now useless, ready for trash.
any further hints are very welcome..
Thanks guys