Fallout 3 Graphics Issue

Hey Guys

When I play Fallout 3 (Or Mass Effect as well) , any source of light isnt shown normally, but as large squares of differing shades of the light. Maybe its an issue with a games for windows game on XP? Maybe to do with DX9? If anyone has any feedback on this issue I would appreciate it.

Cheers

yeah ive updated all my drivers, and fallout 3 runs fine on my pc. Even when i lower the graphics, the light issues are still there.

Actually now that i remember, it doesnt happen on call of duty 4, if that helps.

yeah ive updated all my drivers, and fallout 3 runs fine on my pc. Even when i lower the graphics, the light issues are still there.

Actually now that i remember, it doesnt happen on call of duty 4, if that helps.

_solidsnake_2