Please help us to understand your situation so that we can provide you with useful guidance. Please provide the exact things you are attempting, the exact steps you attempt, and the exact content of any error messages presented. From your very brief information, we can understand nothing about your situation, and therefore can provide you with no useful guidance.
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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.