hi , Howard i have done many tests you have recommended. i have noticed that many people have these errors. dumps caused by 8e/50. i have also 0a/d1/4e. my crashes are very random, and happen multiple times during the same day. memtest has passed on my ram. i have also tried to replace rams and i will still have these system crashes. i am using Kingston Value ram, 512mb, non-ecc. nvidia graphics card. (GeForce fx 5200). i do use the general driver updates from the nvidia.com website. let me know if any bsod victims are also using this ram, and updating their video drivers with the same method. i have attached my dumps, and see if any expert can debug to the source. hopefully we get to the source, and its not the memory sticks. thank you.