[Q] nexus one does not boot, reset without power button

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http://forum.xda-developers.com – My nexus one cannot go through the splash screen during the boot process and keeps restarting over and over. The power button is not working on the device, so I can use the recovery or any option in the bootloader that requires me to push the power button. I cannot enable the debugging option, since I can't start the phone. I was trying to use fastboot thingy, but it keeps coming with "FAILED (remote: signature verify fail)" or" FAILED (remote: not allowed)" Any idea how to bring this phone back to life? (HowTos)