Problem with launch the game

[bratek20]

Hello,
I play on laptop Lenovo G500 specification:
Graphics: AMD Radeon HD 8600/8700M, processor: Intel Core i7-3612QM 2.1GHz, 4 GB RAM , Windows 7 64 bit

I have problems like:
1)After launching the game, when Blade and Soul mark disappear and PIN screen should appear, I get error massage : "Desktop menager has stopped working" and I also see information: "Display driver stopped responding and has recovered". 
2)Sometimes game turned on without errors and I could play for a moment but after about one hour of playing i got "Desktop menager has stopped working" error but I was able to continue playing.
Now I have problem 1) over and over again and I can't play.

My AMD drivers are updated. Help!