if you can get the bootloader screen up you can reflash with a new rom...
How do I get into the Bootloader Mode Screen?
Option 1 - Press and Hold the Power and Volume Down buttons and use the stylus to reset your phone while holding those 2 buttons.
Option 2 - Completely power down your phone (i.e. take out battery). Press and Hold the Power and Volume Down buttons until the phone powers on in the boot loader screen.
To get out of it, simply use your stylus to reset the device.
http://pdaphonehome.com/forums/htc-t...touch-pro.html