I recently upgraded to Windows 7 Ultimate 64 bit. I didn't flash updated BIOS but I don't have a Floppy drive. I also installed a Creative X-Fi Fatal1ty sound card when I did this. I've heard of problems with the board and the sound card. But I've also heard that some of my other drivers may not be 64 bit and causing the problem. How can I look into this? The problem is that when I shut down, sometimes it hangs on Shutting Down... and doesn't complete the shutdown. Do I need to find a way to flash BIOS or could some drivers be causing the issue? (I did a clean install of 64 bit.)