Video Card Problem

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I have 2 Dell XPS M140 Laptops and both have an Intel(R) 915GM/GMS,910GML Express Chipset Family graphics card integrated into the motherbard. They both run Windows XP Media Center Edition 2005. On one laptop, I can't run Media Center, play 3D games, use visualizations in Windows Media Player or sometimes even watch a DVD on it without getting a blue screen error. The message on the Blue Screen Error is different every time, but it mostly says IRQL_NOT_LESS_OR_EQUAL Can anyone shed some light on this?