I purchased some devices on ebay from a seller in China. One of the devices was a USB to RS232 converter which uses the FTDI FT232RL chip. When I plugged it in the drivers did not load for it. After a few emails from FTDI support, it turns out that the FTDI chip on the device was a fake. So I did some research and with the help of fellow forum members at www.electronicspoint.com, was able to unbrick my devices that used the fake FTDI chips.
Click CDM v2.10.00 WHQL Certified to download the FTDI CDM v2.10.00 drivers.
Follow the instructions in this youtube video to get the drivers to work. I recommend going to device manager and right clicking on the device which should have a yellow exclamation point then select uninstall. Also check the box to delete the drivers.