Not really sure if this is going to be of ANY use to you at all.
What you have done is take a Windows phone and try and install Android software on to it. That is like getting and Apple Mac then putting windows onto it.
As you have found out. The phone didn't like it.
What you need to do is get Windows Mobile 6.1 back onto it.
As there are no standalone versions of Windows mobile you may be in trouble.
You could always try and do a HARD reset. This is SUPPOSED to return your phone to factory standard.
To perform a hard reset:
1. With the device turned off, press and hold the Volume Down and Enter keys first, and then press and hold the Power key until you see the following message on the screen:
"This operation will delete
all your personal data,
and reset all settings
to manufacturer default.
Press Vol Up to restore
manufacturer default, or
press other keys to cancel."
2. Release the Volume Down, Enter, and Power keys, and then press the Volume Up key to perform the hard
reset, or press any other button to cancel the reset. Click >>>HERE<<<
to see instructions and picture of which buttons you press.
Unfortunately I'm thinking that you have flashed the rom and therefore wiped Windows Mobile 6.1 completely from the phones ROM or read only memory.
You could try this link
Which will take you to the HTC site where you can get the updated OS for your phone and follow the instructions on there.
Not sure if it will entirely resurrect your phone though. :(