How to turn of caching or shadowing in the bios of a dell Dimension 3000?

Hi i have a dell Dimension 3000. And the blue screen of death shows up and it tells me to turn of shadowing and caching and i dont know how to do that can some one help me.How to turn of caching or shadowing in the bios of a dell Dimension 3000?%26gt;Hold down F2 or DEL key on boot and this will launch the BIOS. Just go to the video section and turn it off. It will say SHADOW, turn it from ON to default or OFF. Save the BIOS change and reboot and that should do it.