I tried to see if the USB drive can be accessed while the 680M is installed and I was not able to boot from it even when I removed my hard drives, even though it booted and executed the commands I added to the AUTOEXEC.BAT without the 680M installed. So I guess there is really no POST, it's not just the black screen, and so I can't flash the video card. Thank you again, jelenn for your reply. It gave me hope that the video card would work after all on my system, but unfortunately there's no way to boot from USB and flash vBIOS if you can't even get to the POST, is there? There is an option of having a service center flash the vBIOS but to the best of my knowledge they pull the bios chip off and then flash it. This will not the solution I want though because if the card still doesn't work after that I won't be able to return it for a refund, which is what I'm gonna do. I'm hoping this bad experience is going to help someone else make the right decision. Best