Date: 2011aug18 OS: Android Q. My HTC magic isn't successfully booting what should I do? A. Sounds like you need to do a factory reset. - Remove the battery for a minute - Replace the battery - Press [Home] and [<--] and will still pressing those quickly touch the red [end call] button - You should get a menu... follow the prompts If you are booting but just want to factory reset:

Settings > Privacy > Factory Reset