Okay so my first question is: Why did you reinstall for the second time? You were able to play so why reinstall?
Now, go to Control Panel, select adobe flash, delete that motherfker from your programs. Go to Google, search for: Adobe flash player, download, install, close all browsers, log off windows, log in windows, go to facebook.com, log in, play top eleven through facebook. SHould work dude. If not, try topeleven.com.
Second option: Downlaod malware bytes, run a full scan. Delete all the crap that it found. Restart PC. UNINSTALL (no reinstall or whatever) adobe Flash player. download, install, play top eleven.
Third option: System restore to a previous back up restore point (your pc always makes a few now and then). Go to start - fill in the white search box (if you have windows 7) : restore
You see System Restore pop up on top, click on it , press Next, there is a restore point, select it, press Next, and restore that motherfker. Restart and its back to old setting.
Fourth option: Reinstall windows!