Hi Xanthos,
This should hopefully get you going again:
1. Create a shortcut to the WoW.exe. file (Right Click on the WoW.exe file, select "Send To >", and Click "Desktop (Create Shortcut)")
2. Goto your desktop.
3. Right-Click on the "Shortcut to WoW.exe" file and click "Properties"
4. Add " -Maxscreen" to the end of the "Target:" so that it reads similar to: "C:\Elysium Project Game Client\WoW.exe" -Maxscreen (Your path will vary depending on where you downloaded your client to)
5. Run the game through the Shortcut, and this should set the graphics options back to Full Screen, or at least allow you to set it back to Full Screen within the client.
Let me know if you have any issues.
Thanks Xanthos,
werdo64