instalate esto y seguro q despues te funciona:
https://www.dropbox.com/s/vr0dk0tegj...-setup-1.2.exe
1. Run it (Require administrator privileges)
2. Press Y/Yes to install ADB and Fastboot or N/No to skip
3. Press Y/Yes to install Drivers or N/No to skip
4. Continue Driver installation
5. 15 seconds passed - finished!