I designed a board containing a USB to UART bridge in order to program a ATmega microcontroller. I copied the schematic of this breakout board from Sparkfun
This is my schematic:
I install FTDI drivers from this link:
in "windows - setup executable". It doesn't work. My computer doesn't recognize it. I have windows 8.1 and I think it could be related. I disabled device driver signatures.
I don't know what to do now. I don't think it's related with my schematic, but I can't solve this problem.