1) Download latest Catalyst drivers from www.amd.com (Should be version 13.9 or higher) - *don't install*.
2) Download Treexy Driver Fusion (http://treexy.com/products/driver-fusion) 1.7.0 and install it
3) Uninstall current Catalyst drivers through the Control Panel and *reboot* your PC
4) You should be reverted back to good old VGA. Now, fire up Driver Fusion and click "Maintenance"->"Driver Family"->[x] AMD (Swap with Nvidia if thats your card)->"Details" (Bottom)
5) Ensure all the files in the list are selected and click "Delete" (Bottom). Wait for the process to complete and then *reboot* your PC again.
6) Repeat step 4, this time the list should be empty - if not; repeat 5 and 6 until all files are removed otherwise if the list is empty continue to 7...
7) Navigate to where you downloaded the Catalyst drivers and run the exe file. It will extract the files to a folder (E.g. C:\amd\[...etc]) and start it's setup program. Run through the setup (It might say "Setup completed with Warnings" at the end - ignore this, it's fine)
8) Click [Finish] - *reboot* once more.
9) Fire up BattleField and see if all is well...