Also double check your system property make sure is showed in 512mb. If less than that, it may be shared with other built-in component as well. i suggest upgrade to 1gb for better performance.

Need HELP here. I installed the game yesterday night, when i play the tutorial in not more than 10minute, suddenly my screen became black & see nothing, only can heard the sound. It repeated the same all the way after 10min play. I play it in my acer laptop 5560 1.83ghz dual core, 512mb ddr2 ram & x1600 256mb vga card. My ati driver is 6.12 & with DirectX 9.0c.

Please help me if anyone know the solution. thks.

"OverHeating" also under my consideration and i have use it all the time with fan cooler pad too. If you mean the vga card overheating but I have test with 3dmark05 & 06 continuously without having any problem.

Have anyone out there play COH by using the laptop before? Need some advice & opinion....hence this is a very nice game.