Try a different USB port (preferably a USB 2.0 port, as 3.0/3.1 can sometimes cause timing issues with legacy boxes). FTDI "Fake Chip" Driver Issues
Locate the "Unknown Device" or "SETool" entry under Other Devices . Right-click it and select .
In the past, FTDI released drivers that would "brick" or disable non-genuine FTDI chips.