I just purchased a new ati radeon aiw 9800 pro, i uninstalled the drivers to my old card and turned off the computer. after doing this, i rebooted and it comes to my logon scrren but only show the xpize background/wallpaper. there's no window in the middle with the user accounts. Just the background. I tried booting in safe mode. I need help because I'm desperate to want to try out my new card!!!!!!