Do you have fastboot? If not then download below.
Extract contents to desktop. Open up a command prompt:
Put phone in bootloader mode. In command prompt type:
fastboot oem unlock (only if your bootloader is still locked). If its unlocked then download this
Put in the platform-tools folder you extracted earlier. Then type in command prompt:
fastboot flash recovery recovery-clockwork-188.8.131.52-crespo.img
Sometimes the flash might say 'fail' if that is the case then just boot the recovery image by typing:
fastboot boot recovery-clockwork-184.108.40.206-crespo.img
Now boot into recovery and flash either a stock rom, stock rooted rom, or whatever your desire is.
This should work. If not, then there has to be a hardware issue with phone and go ahead and send it in for warranty. Let me know if this helps.