Hi I'm having troubles installing driver of my TM4C123G. I have a Toshiba Satellite S855D-SP5167LM with windows 8.1. I tried this instructions http://edx-org-utaustinx.s3.amazonaws.com/UT601x/InstallDrivers8.htm but it didn't work. Windows says that windows found the drivers but couldn't install them. Any idea what could be the problem? I will apreciate your help, thank you.