yes but we need to know the details of the software your running, including driver details etc. The hardware itself isnt really a problem as ET and TCE will run on anything from 1999 to present machines.
Have you tried updating PB? Upgrading PB manually usually is the best choice but it takes too long. What you can do is try if you can download the new PB auto updater from their website
www.evenbalance.org
Currently I only know that this auto upgrader is available with the lastest version of America's Army. What is does is checks for updates for every PB supported game you have and quickly scans for any updates throughout its network up to three times faster than the regular manual or ingame update. You should probably try to do this first. Check it for updates that could be your only problem.
If it still doesnt work, you can try to reinstall the game by following the step by step instructions provided in the site's help sections. This is the last option and not really the best one but most likely will be the most effective.
If you can give us the full error message we can solve this problem much faster.

Hope that helps.