So, you want to root your Transformer Prime on a Windows computer?
Before you can do that, you will need to install Transformer Prime USB drivers.
First, download TransformerPrimeDriver.zip and unzip to your Desktop or somewhere you can find it easily: Download TransformerPrimeDriver.zip Step 1. Go to Settings->Developer Options and make sure USB Debugging is checked ON.
Step 2. Open up Device Manager under Control Panel-