These are the steps to do a hard reset of your HTC tornado/Faraday based Smartphone. When you do this all custom data on the phone will be removed and the default setup will be put in place
You have 2 options on doing this. The first way requires you to be able to boot the phone and get to the start menu. The second is if you cannot do this (ie forgot PIN or will not boot all the way).
Start -> Accessories -> Clear Storage