Damaged Display - Black Screen

[Arts]

Is it possible to access the phone system from a computer to do a hard reset and backup data? My HTC Diamond phone screen went black after I dropped it a few days ago. I can still use the hard keys to call out using voice command and I can receive calls but that's about it. I need to relock it and backup my data before I take it in to telus. Do I also need to reinstall the original telus ROM? I can't do a hard reset because I can't enter the 1234 sequence.

Help please.