The issue you describe appears to be corruption of one or more system files within the BlackBerry OS or that a file is locked in process and does not let the BB connect as it should. Below you will find 2 solutions to help resolve your issue.
If you wish to restore the BB, please continue below after verifying that you have the following:
A. Computer (Windows)
B. BlackBerry Desktop Manager
C. Latest version of the BlackBerry OS for your make/model BB
D. BlackBerry USB Data Cable
A. Battery Pull
1. Remove the battery cover and battery from your BB.
2. Wait about 1 minute, then reinsert the battery.
3. Power on your BB and test it by making a phone call to test for outgoing calls.
4. If it works, proceed to step #5. If not, then skip down to solution B, step #1.
5. Ask someone to call you to test for incoming calls.
6. If it works, put the battery cover back. If not, then skip down to solution B, step #1.
B. BlackBerry OS Software Update
Note: A forced update should restore your BB to working condition, but there is the risk that you may lose your data. If that is a problem, do not proceed.
To get the OS, simply logon to your carriers website and download the latest version of the OS for your BB. Once the file is saved to your computer
, you need to install the setup files just like you would any other program. When completed, proceed to step #1.
1. Open BB Desktop Manager
2. Remove the battery cover, battery and microSD card (if you have one) from your BlackBerry.
the BB to your computer via USB cable (without the battery in place, just the phone's shell).
4. There should be a few drivers that will load automatically and the BB Desktop
Manager will recognize your BB.
5. Close the BB Desktop Manager
once it has been detected.
6. Go to the following path. C:\Program Files\Common Files\Research In Motion\AppLoader
7. Double-click the "AppLoader.exe" application
8. Once it loads, the application will detect your BB and proceed to update your BlackBerry's OS.
9. If you are prompted to backup your BB data, please do so. If not, then proceed to step #10.
10. Select wipe (or secure wipe) to completely remove the existing OS and data.
A fresh, updated version of the BlackBerry OS will be installed on your BB. The process takes about 35-90 mins to complete. Once done, the BB will automatically reboot and if you had an existing backup or created one before wiping/installing, you can now reopen the BB Desktop Manager and restore your backup to the BB.