Hey guys im currently using KR 160gb set, when i play AC, the game would just hang and i need to shutdown the set. When i turn it back on it beep a couple of time instead of the usual single beep. Is this the symptom or YLOD or just normal crashes as i googled up Assassin Creed and it seems the game have some bug.

Btw it nvr happen for other games just Assassin Creed.