Start at the beginning.
When you received the device and powered it up, what did you see?
Did you try a simple hard reset? That is, with the power on, remove the battery for at least 30 seconds.
Did/does it have a microSD card installed? Did you try removing it and operating the blackberry without the card insalled?
You say you wiped it. Exactly what did you do? What did you use?
Regarding unlocking, the easiest, safest thing to do is buy the code from a reputable source. Check out the sponsors of this forum. See
How do I unlock my BlackBerry? - BlackBerryFAQ. Stay away from any engineering utility software you may have found or heard about; you'll ruin the device.