Well, that indeed would be unfortunate. There are many more tricks to try, but with the limited details from you I honestly do not know which to recommend...BBs that are "bricked" have been brought back to life many many times. Unless the problem is truly hardware, it can usually be returned to an operational state.
Occam's Razor nearly always applies when troubleshooting technology issues!
If anyone has been helpful to you, please show your appreciation by clicking the button inside of their post. Please click here and read, along with the threads to which it links, for helpful information to guide you as you proceed. I always recommend that you treat your BlackBerry like any other computing device, including using a regular backup schedule...click here for an article with instructions.