Thanks for the reply.
I got some more information for the bsod
Yesterday, the bsod happen for the fifth time and this time my game didnt freeze directly,
It starts with buzzing (might be from speaker or hard disk), and game start to mute. First the background song stop, then the sound effect, and then bsod. I still can play normally during the muting phase.
So i conclude that it might be hard disk problem or sound problem.
When i ejected disc from my ps2 while it is running the game, usually i still can play the game for a while without the sound before the crash. Thats what maybe happening to my hard disk, it stops responding. But if my hard disk is faulty, i shouldnt be able to even boot windows right ?
Also i found that i had 2 sound drivers, the drivers might be crashin each other. I had disabled one of them and i played 3 match of dota without bsod. But im still not sure, if it were really the problem, where the buzzing come from ? And why it only crash when im playing dota ?
As for the software, ill try it once i can use my laptop again:) thanks