[Tamiebbuser]

My bold stopped working after downloading and installing a theme on it. I downloaded and installed the theme and it requested a restart to complete the installation. Upon restarting, it could not go further than the home screen. It gets to the home screen of the new theme and freezes. It does the same even after restarting.
Is that a software or hardware problem and how can i get past it?

[Dubdub]

Probably one that is not compatible with your device or OS or perhaps corrupted a file.

Try restarting in SAFE mode - KB17877-How to start a BlackBerry smartphone in Safe Mode

Then delete the theme and see what happens.

If it still freezes and won't fully reboot, then it is a corrupt file and you will need to reload the OS. I hope you have a data backup. Otherwise it is all gone.