Freeze during introduction + Black screen

[Keyhaku]

Hi,

i've just bought king's bounty, i installed it, downloaded the 1.7 patch and applied it.

When i launch the game during introduction movies sometimes i have some little freeze (sound + video) for some seconds, but the worst is that if i wait too long the screen goes black (i can hear the sounds of movies that keeps on working), but if i alt+tab and re alt+tab to the game i can see the graphics for 1 or 2 seconds then the same thing happens..


My configuration :

Athlon AMD 32bits 3200+
HD3650 AGP 512 Mo
WIndows Xp Sp3
1536 Mo Ram

latest drivers etc..

Thanks for the help you could give me