ok so iv tried
11.5 cap 4 with and without CCC
different slot
lowering the core speed / upping the voltage to 1.164 on stock
going to try
change dx setting in BC2 from auto to 11
other games have been stable since i changed a few things apart from bc2 still
Just go to your documents folder and there will be a folder called 'bfbc2' go into a file called 'settings' and change 'dx version' to 11, rather than auto. You can also turn bloom off (by entering 'false') to help if this does not work. But I find the game doesn't look as nice with bloom off.