Blackberry Classic Stuck on Carrier Emblem and will not power down or return to the main screen?

I tried to power down the unit by holding the key down and it will not shut off. I will also not return to any screen where the keys function.

Originally Posted by CrackBerry Question

I tried to power down the unit by holding the key down and it will not shut off. I will also not return to any screen where the keys function.

Try hold down the power button and the volume up / down buttons, all three at the same time, until it force-restarts.
Give it at least 30 seconds if it appears to not be doing anything before giving up.