I recently tried to install Windows 7 x86 Home Premium as an upgrade to my Vista x86 Home Premium. While it was installing, I got a Blue Screen of Death. Now it happens within minutes of startup when I try to start my computer. All I have the the downloadable version on a disc, is it possible to boot from the disc and install it that way? Or is that only possible with the boxed edition? Nothing about incompatible graphics drivers showed up in the Windows 7 Upgrade Advisor. I assumed that was the problem but it might not be. Thanks.