Thank you bovi. I will try several of your suggestions. I was laughing at your reply because this afternoon I received and installed a new graphics card. It didn't help. It's an ATI Radeon, naturally. My friends claim that if it wasn't for bad luck I would have no luck at all. I'm running XP, so the Vista tweaks won't work but I will keep them in mind as I'm getting a new laptop with Vista installed sometime in the next 6 weeks or so and will try to install EB there. One last question; how do I run Memtest?