Hi! I have installed Snow Leopard on my Dell Vostro 1015. Everything works well except my graphics card(Intel GMA4500 MHD). I tried several ways to make it work, but still it isn't working properly. So I decided to put Windows 7 back. I will use osx later, when I get a better computer. But here is another problem. When I try to boot using Windows instalation DVD or bootable USB flash drive, computer still loads into Snow Leopard. When I hit F12 at startup - there is a possibility to chose USB drive, but it always loads into HDD. Do I have to change something in bios settings? Or is there a specific way to make bootable USB or DVD to make it boot when osx is installed. I have Snow Leopard 10.6.3. with Chameleon RC5 bootloader. When I put this USB drive in a windows computer, everything seems working and it loads when I choose it with F12.