Originally Posted by darkoblade
you should be fine, in the attached screenshot use the POWER button to enter FASTBOOT, once it says FASTBOOT where it now shows HBOOT, connect it to your PC.
it should then show as FASTBOOT USB (if it doesn't then you're missing the drivers on your PC, and have to reinstall them)
then just follow the steps on your PC:
"fastboot erase cache"
"fastboot flash recovery <name of recovery>.img"
if any of those give you an error message (or any message), post them for us to see.