These wheels have been driving me nuts, we have three of them.
here's the complete run down.
Loading the correct driver is difficult to say the least, the enemy in the first instance is windows and your antivirus, DO NOT plug the wheel in until the software tells you to, or windows will install a generic driver and refuse to change it, and when I say refuse, this is the extreme that I have to go to to get the actual driver to install.
1) Firstly when downloading the driver, turn off your ANTIVIRUS, because every one of them breaks the driver every chance that they get.
2) You need to uninstall the wrong driver, empty your recycle bin and restart the PC with the wheel unplugged, this is the only way to stop windows reloading the wrong driver over and over again.
3) Once you have your 2020_TTRS_1 executable downloaded safely run the program and connect the wheel when TOLD too, if you pay attention to your taskbar you will see a windows notification saying that a Thrustmaster RS300 has been found and installed, if the windows notice says generic wheel found then you have to delete it and start all over again.
To check open the Thrustmaster control panel, if one of your listed Thrustmaster T300 is listed then all is good, if not.. start again