Originally Posted by kakamank100
How can i fix it??
Please post the name of the graphic cards, name and version of the graphics card driver, name of your laptop and details about your OS.
The way how to fix that depends on the information you can give us.
Mostly the more powerful graphics card is selected when you switch your laptop from powersave mode to performance mode (e.g. windows traybar -> battery icon -> click).
PS: My Regnum crashes nearly every time on closing with "BEX" at "StackHash_0a9e".
OS: Win7 Prof. x64