Default P3600 blackscreen

Hey,

i have a problem with my htc Trinity.
I installed a fine ROM of Windows Mobile 6.5 a few month ago.
I was a bloody nooby, but somehow it works till now.
Now my PDA just gives me a blackscreen when starting it. The backlight of the LCD is on ...but nothing more.

I tried to do a hard reset and the display shows "Press SEND to restore factory default, press END to quit" ... so gerneraly the display should be fine...
But when i try to start the bootloader with camera and power button nothing happen

I cant connect via USB... widows doesnt find any devices.

Pleade help me.. i used the search but didnt find anything helpfull
Im just a newbie

Greetings Cominus

P.S : Sorry for my bad englisch