The error code should look something like:
STOP: 0x00000050 (0xE3EA3104, 0x00000000, 0xBF35CE85, 0c000000001)
igxpdx32.DLL - Address BF35CE85 base at BF1CC000, DateStamp 45a92607
It occurs mostly on Windows XP with an Intel graphics chipset (Intel 915 GM/GMS, 910 GML Express Chipset Family).
Update your graphics card drivers to a previous version (184.108.40.20670 14/08/2006 is working fine). You can find a copy of the drivers here.