Default [Done] Desire stuck@bootanimation and adb not working

Hi everyone,

I have a problem with a Desire:
-Vol- Button not working
-no adb access when phone is off

I installed CM10.1, and it does not boot up, i've had the phone running over night. When I try to reach the phone via adb, at first I get a 'device offline' message and after sth. like 10 minutes at the bootscreen it changes to 'device unauthorized. please check the confirmation dialog on your device'. Which I can't because it onl shows the bootanimation.

Is there any possibility to enter recovery?

Thanks

[EDIT]
Done, since I got nothing to loose I pressed the vol- so hard and it actually booted to bootloader.