I tried eyefinity recently and it works great. However, i messed up the configuration and somehow hit the "Keep changes" instead of revert, and both screens went black. I unplugged the biggest monitor so i could see on the other monitor and uninstalled ALL of AMD and reinstalled it. Somehow the bigger monitor is still blacked out when i use windows without safemode. When its booting up it works fine. It also works in safe mode. Remember, I completely reinstalled all of AMD, so it doesn't really make sense that eyefinity would still keep these settings. Btw i used DDU