I had purchase Call of Duty 4 and installed in my system. I have and intel processor with 1 gig of memory and 512 nvidia graphic card. I had played a game couple for time. But the now the picture is different. Like sometime while playing the game the system restart's. After that when I launch the game again I receive the error on the display as iw3sp.exe. Then again after a restart I got a different error called Video Card or Driver does not support UBYTE4N vertex data. I really fed up with this. I believe this an unstable version with windows vista. If there is some solution please reply.
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